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Finding the Fourth Proportional to 72,800.59, 109,123.12 and 51,960.91

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Solution

The fourth proportional to 72,800.59, 109,123.12 and 51,960.91 is: 77,885.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,800.59 : 109,123.12 = 51,960.91 : x
  2. Step 2: Convert to fraction form
    72,800.59/109,123.12 = 51,960.91/x
  3. Step 3: Cross multiply
    72,800.59x = 109,123.12 × 51,960.91
  4. Step 4: Simplify right side
    72,800.59x = 5,670,136,617.24
  5. Step 5: Solve for x
    x = 5,670,136,617.24/72,800.59
  6. Step 6: Final answer
    x = 77,885.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.