Home / 74,321.12-102,563.34-42,490.88

Finding the Fourth Proportional to 74,321.12, 102,563.34 and 42,490.88

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Solution

The fourth proportional to 74,321.12, 102,563.34 and 42,490.88 is: 58,637.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,321.12 : 102,563.34 = 42,490.88 : x
  2. Step 2: Convert to fraction form
    74,321.12/102,563.34 = 42,490.88/x
  3. Step 3: Cross multiply
    74,321.12x = 102,563.34 × 42,490.88
  4. Step 4: Simplify right side
    74,321.12x = 4,358,006,572.34
  5. Step 5: Solve for x
    x = 4,358,006,572.34/74,321.12
  6. Step 6: Final answer
    x = 58,637.53

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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.