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Finding the Fourth Proportional to 75,211.62, 112,815.81 and 19,807.62

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Solution

The fourth proportional to 75,211.62, 112,815.81 and 19,807.62 is: 29,711.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,211.62 : 112,815.81 = 19,807.62 : x
  2. Step 2: Convert to fraction form
    75,211.62/112,815.81 = 19,807.62/x
  3. Step 3: Cross multiply
    75,211.62x = 112,815.81 × 19,807.62
  4. Step 4: Simplify right side
    75,211.62x = 2,234,612,694.47
  5. Step 5: Solve for x
    x = 2,234,612,694.47/75,211.62
  6. Step 6: Final answer
    x = 29,711.00

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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.