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Finding the Fourth Proportional to 72,299.92, 99,759.70 and 45,426.84

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Solution

The fourth proportional to 72,299.92, 99,759.70 and 45,426.84 is: 62,680.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,299.92 : 99,759.70 = 45,426.84 : x
  2. Step 2: Convert to fraction form
    72,299.92/99,759.70 = 45,426.84/x
  3. Step 3: Cross multiply
    72,299.92x = 99,759.70 × 45,426.84
  4. Step 4: Simplify right side
    72,299.92x = 4,531,767,930.35
  5. Step 5: Solve for x
    x = 4,531,767,930.35/72,299.92
  6. Step 6: Final answer
    x = 62,680.12

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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.