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Finding the Fourth Proportional to 127,807.72, 191,711.58 and 39,061.48

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Solution

The fourth proportional to 127,807.72, 191,711.58 and 39,061.48 is: 58,592.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,807.72 : 191,711.58 = 39,061.48 : x
  2. Step 2: Convert to fraction form
    127,807.72/191,711.58 = 39,061.48/x
  3. Step 3: Cross multiply
    127,807.72x = 191,711.58 × 39,061.48
  4. Step 4: Simplify right side
    127,807.72x = 7,488,538,047.94
  5. Step 5: Solve for x
    x = 7,488,538,047.94/127,807.72
  6. Step 6: Final answer
    x = 58,592.22

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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.