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Finding the Fourth Proportional to 60,760.80, 91,141.20 and 42,001.20

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Solution

The fourth proportional to 60,760.80, 91,141.20 and 42,001.20 is: 63,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,760.80 : 91,141.20 = 42,001.20 : x
  2. Step 2: Convert to fraction form
    60,760.80/91,141.20 = 42,001.20/x
  3. Step 3: Cross multiply
    60,760.80x = 91,141.20 × 42,001.20
  4. Step 4: Simplify right side
    60,760.80x = 3,828,039,769.44
  5. Step 5: Solve for x
    x = 3,828,039,769.44/60,760.80
  6. Step 6: Final answer
    x = 63,001.80

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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.