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Finding the Fourth Proportional to 125,038.72, 187,574.56 and 40,769.30

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Solution

The fourth proportional to 125,038.72, 187,574.56 and 40,769.30 is: 61,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,038.72 : 187,574.56 = 40,769.30 : x
  2. Step 2: Convert to fraction form
    125,038.72/187,574.56 = 40,769.30/x
  3. Step 3: Cross multiply
    125,038.72x = 187,574.56 × 40,769.30
  4. Step 4: Simplify right side
    125,038.72x = 7,647,283,509.01
  5. Step 5: Solve for x
    x = 7,647,283,509.01/125,038.72
  6. Step 6: Final answer
    x = 61,159.32

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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.