Home / 71,262.71-98,341.12-39,431.60

Finding the Fourth Proportional to 71,262.71, 98,341.12 and 39,431.60

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Solution

The fourth proportional to 71,262.71, 98,341.12 and 39,431.60 is: 54,414.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,262.71 : 98,341.12 = 39,431.60 : x
  2. Step 2: Convert to fraction form
    71,262.71/98,341.12 = 39,431.60/x
  3. Step 3: Cross multiply
    71,262.71x = 98,341.12 × 39,431.60
  4. Step 4: Simplify right side
    71,262.71x = 3,877,747,707.39
  5. Step 5: Solve for x
    x = 3,877,747,707.39/71,262.71
  6. Step 6: Final answer
    x = 54,414.82

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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.