Home / 71,471.12-98,637.32-39,646.20

Finding the Fourth Proportional to 71,471.12, 98,637.32 and 39,646.20

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Solution

The fourth proportional to 71,471.12, 98,637.32 and 39,646.20 is: 54,715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,471.12 : 98,637.32 = 39,646.20 : x
  2. Step 2: Convert to fraction form
    71,471.12/98,637.32 = 39,646.20/x
  3. Step 3: Cross multiply
    71,471.12x = 98,637.32 × 39,646.20
  4. Step 4: Simplify right side
    71,471.12x = 3,910,594,916.18
  5. Step 5: Solve for x
    x = 3,910,594,916.18/71,471.12
  6. Step 6: Final answer
    x = 54,715.74

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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.