Home / 74,219.68-102,421.04-42,387.92

Finding the Fourth Proportional to 74,219.68, 102,421.04 and 42,387.92

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Solution

The fourth proportional to 74,219.68, 102,421.04 and 42,387.92 is: 58,494.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,219.68 : 102,421.04 = 42,387.92 : x
  2. Step 2: Convert to fraction form
    74,219.68/102,421.04 = 42,387.92/x
  3. Step 3: Cross multiply
    74,219.68x = 102,421.04 × 42,387.92
  4. Step 4: Simplify right side
    74,219.68x = 4,341,414,849.84
  5. Step 5: Solve for x
    x = 4,341,414,849.84/74,219.68
  6. Step 6: Final answer
    x = 58,494.12

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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.