Home / 51,221.19-70,686.12-28,253.66

Finding the Fourth Proportional to 51,221.19, 70,686.12 and 28,253.66

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Solution

The fourth proportional to 51,221.19, 70,686.12 and 28,253.66 is: 38,990.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,221.19 : 70,686.12 = 28,253.66 : x
  2. Step 2: Convert to fraction form
    51,221.19/70,686.12 = 28,253.66/x
  3. Step 3: Cross multiply
    51,221.19x = 70,686.12 × 28,253.66
  4. Step 4: Simplify right side
    51,221.19x = 1,997,141,247.77
  5. Step 5: Solve for x
    x = 1,997,141,247.77/51,221.19
  6. Step 6: Final answer
    x = 38,990.53

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Double scale
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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.