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Finding the Fourth Proportional to 85,532.61, 128,320.02 and 29,373.57

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Solution

The fourth proportional to 85,532.61, 128,320.02 and 29,373.57 is: 44,067.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,532.61 : 128,320.02 = 29,373.57 : x
  2. Step 2: Convert to fraction form
    85,532.61/128,320.02 = 29,373.57/x
  3. Step 3: Cross multiply
    85,532.61x = 128,320.02 × 29,373.57
  4. Step 4: Simplify right side
    85,532.61x = 3,769,217,089.87
  5. Step 5: Solve for x
    x = 3,769,217,089.87/85,532.61
  6. Step 6: Final answer
    x = 44,067.60

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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.