Home / 71,606.32-98,818.08-39,778.18

Finding the Fourth Proportional to 71,606.32, 98,818.08 and 39,778.18

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Solution

The fourth proportional to 71,606.32, 98,818.08 and 39,778.18 is: 54,894.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,606.32 : 98,818.08 = 39,778.18 : x
  2. Step 2: Convert to fraction form
    71,606.32/98,818.08 = 39,778.18/x
  3. Step 3: Cross multiply
    71,606.32x = 98,818.08 × 39,778.18
  4. Step 4: Simplify right side
    71,606.32x = 3,930,803,373.49
  5. Step 5: Solve for x
    x = 3,930,803,373.49/71,606.32
  6. Step 6: Final answer
    x = 54,894.64

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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.