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Finding the Fourth Proportional to 69,472.70, 95,877.12 and 42,259.40

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Solution

The fourth proportional to 69,472.70, 95,877.12 and 42,259.40 is: 58,320.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,472.70 : 95,877.12 = 42,259.40 : x
  2. Step 2: Convert to fraction form
    69,472.70/95,877.12 = 42,259.40/x
  3. Step 3: Cross multiply
    69,472.70x = 95,877.12 × 42,259.40
  4. Step 4: Simplify right side
    69,472.70x = 4,051,709,564.93
  5. Step 5: Solve for x
    x = 4,051,709,564.93/69,472.70
  6. Step 6: Final answer
    x = 58,320.89

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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.