Home / 71,263.87-98,340.05-39,431.17

Finding the Fourth Proportional to 71,263.87, 98,340.05 and 39,431.17

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Solution

The fourth proportional to 71,263.87, 98,340.05 and 39,431.17 is: 54,412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,263.87 : 98,340.05 = 39,431.17 : x
  2. Step 2: Convert to fraction form
    71,263.87/98,340.05 = 39,431.17/x
  3. Step 3: Cross multiply
    71,263.87x = 98,340.05 × 39,431.17
  4. Step 4: Simplify right side
    71,263.87x = 3,877,663,032.20
  5. Step 5: Solve for x
    x = 3,877,663,032.20/71,263.87
  6. Step 6: Final answer
    x = 54,412.75

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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.