Home / 71,181.19-98,221.51-39,345.76

Finding the Fourth Proportional to 71,181.19, 98,221.51 and 39,345.76

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Solution

The fourth proportional to 71,181.19, 98,221.51 and 39,345.76 is: 54,292.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,181.19 : 98,221.51 = 39,345.76 : x
  2. Step 2: Convert to fraction form
    71,181.19/98,221.51 = 39,345.76/x
  3. Step 3: Cross multiply
    71,181.19x = 98,221.51 × 39,345.76
  4. Step 4: Simplify right side
    71,181.19x = 3,864,599,615.38
  5. Step 5: Solve for x
    x = 3,864,599,615.38/71,181.19
  6. Step 6: Final answer
    x = 54,292.43

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Half scale
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Double scale
Find fourth proportional to 71,182.19, 98,222.89 and 39,346.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.