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Finding the Fourth Proportional to 103,314.72, 154,959.12 and 40,925.28

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Solution

The fourth proportional to 103,314.72, 154,959.12 and 40,925.28 is: 61,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,314.72 : 154,959.12 = 40,925.28 : x
  2. Step 2: Convert to fraction form
    103,314.72/154,959.12 = 40,925.28/x
  3. Step 3: Cross multiply
    103,314.72x = 154,959.12 × 40,925.28
  4. Step 4: Simplify right side
    103,314.72x = 6,341,745,374.55
  5. Step 5: Solve for x
    x = 6,341,745,374.55/103,314.72
  6. Step 6: Final answer
    x = 61,382.79

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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.