Home / 71,115.77-98,136.16-39,278.52

Finding the Fourth Proportional to 71,115.77, 98,136.16 and 39,278.52

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Solution

The fourth proportional to 71,115.77, 98,136.16 and 39,278.52 is: 54,202.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,115.77 : 98,136.16 = 39,278.52 : x
  2. Step 2: Convert to fraction form
    71,115.77/98,136.16 = 39,278.52/x
  3. Step 3: Cross multiply
    71,115.77x = 98,136.16 × 39,278.52
  4. Step 4: Simplify right side
    71,115.77x = 3,854,643,025.09
  5. Step 5: Solve for x
    x = 3,854,643,025.09/71,115.77
  6. Step 6: Final answer
    x = 54,202.36

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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.