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Finding the Fourth Proportional to 74,429.70, 111,644.55 and 60,432.90

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Solution

The fourth proportional to 74,429.70, 111,644.55 and 60,432.90 is: 90,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,429.70 : 111,644.55 = 60,432.90 : x
  2. Step 2: Convert to fraction form
    74,429.70/111,644.55 = 60,432.90/x
  3. Step 3: Cross multiply
    74,429.70x = 111,644.55 × 60,432.90
  4. Step 4: Simplify right side
    74,429.70x = 6,747,003,925.70
  5. Step 5: Solve for x
    x = 6,747,003,925.70/74,429.70
  6. Step 6: Final answer
    x = 90,649.35

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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.