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Finding the Fourth Proportional to 71,333.44, 98,440.32 and 39,503.68

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Solution

The fourth proportional to 71,333.44, 98,440.32 and 39,503.68 is: 54,515.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,333.44 : 98,440.32 = 39,503.68 : x
  2. Step 2: Convert to fraction form
    71,333.44/98,440.32 = 39,503.68/x
  3. Step 3: Cross multiply
    71,333.44x = 98,440.32 × 39,503.68
  4. Step 4: Simplify right side
    71,333.44x = 3,888,754,900.38
  5. Step 5: Solve for x
    x = 3,888,754,900.38/71,333.44
  6. Step 6: Final answer
    x = 54,515.17

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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.