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Finding the Fourth Proportional to 71,937.76, 99,336.78 and 45,126.35

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Solution

The fourth proportional to 71,937.76, 99,336.78 and 45,126.35 is: 62,313.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,937.76 : 99,336.78 = 45,126.35 : x
  2. Step 2: Convert to fraction form
    71,937.76/99,336.78 = 45,126.35/x
  3. Step 3: Cross multiply
    71,937.76x = 99,336.78 × 45,126.35
  4. Step 4: Simplify right side
    71,937.76x = 4,482,706,302.15
  5. Step 5: Solve for x
    x = 4,482,706,302.15/71,937.76
  6. Step 6: Final answer
    x = 62,313.68

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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.