Home / 71,715.20-98,965.56-39,883.41

Finding the Fourth Proportional to 71,715.20, 98,965.56 and 39,883.41

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Solution

The fourth proportional to 71,715.20, 98,965.56 and 39,883.41 is: 55,038.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,715.20 : 98,965.56 = 39,883.41 : x
  2. Step 2: Convert to fraction form
    71,715.20/98,965.56 = 39,883.41/x
  3. Step 3: Cross multiply
    71,715.20x = 98,965.56 × 39,883.41
  4. Step 4: Simplify right side
    71,715.20x = 3,947,084,154.92
  5. Step 5: Solve for x
    x = 3,947,084,154.92/71,715.20
  6. Step 6: Final answer
    x = 55,038.32

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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.