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Finding the Fourth Proportional to 60,815.20, 91,201.20 and 42,095.20

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Solution

The fourth proportional to 60,815.20, 91,201.20 and 42,095.20 is: 63,127.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,815.20 : 91,201.20 = 42,095.20 : x
  2. Step 2: Convert to fraction form
    60,815.20/91,201.20 = 42,095.20/x
  3. Step 3: Cross multiply
    60,815.20x = 91,201.20 × 42,095.20
  4. Step 4: Simplify right side
    60,815.20x = 3,839,132,754.24
  5. Step 5: Solve for x
    x = 3,839,132,754.24/60,815.20
  6. Step 6: Final answer
    x = 63,127.85

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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.