Home / 74,279.81-102,513.15-42,442.54

Finding the Fourth Proportional to 74,279.81, 102,513.15 and 42,442.54

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Solution

The fourth proportional to 74,279.81, 102,513.15 and 42,442.54 is: 58,574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,279.81 : 102,513.15 = 42,442.54 : x
  2. Step 2: Convert to fraction form
    74,279.81/102,513.15 = 42,442.54/x
  3. Step 3: Cross multiply
    74,279.81x = 102,513.15 × 42,442.54
  4. Step 4: Simplify right side
    74,279.81x = 4,350,917,744.62
  5. Step 5: Solve for x
    x = 4,350,917,744.62/74,279.81
  6. Step 6: Final answer
    x = 58,574.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.