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Finding the Fourth Proportional to 90,737.64, 136,106.46 and 28,413

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Solution

The fourth proportional to 90,737.64, 136,106.46 and 28,413 is: 42,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,737.64 : 136,106.46 = 28,413 : x
  2. Step 2: Convert to fraction form
    90,737.64/136,106.46 = 28,413/x
  3. Step 3: Cross multiply
    90,737.64x = 136,106.46 × 28,413
  4. Step 4: Simplify right side
    90,737.64x = 3,867,192,847.98
  5. Step 5: Solve for x
    x = 3,867,192,847.98/90,737.64
  6. Step 6: Final answer
    x = 42,619.50

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Double scale
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Similar ratio
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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.