Home / 74,318.72-102,561.60-42,490.60

Finding the Fourth Proportional to 74,318.72, 102,561.60 and 42,490.60

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Solution

The fourth proportional to 74,318.72, 102,561.60 and 42,490.60 is: 58,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,318.72 : 102,561.60 = 42,490.60 : x
  2. Step 2: Convert to fraction form
    74,318.72/102,561.60 = 42,490.60/x
  3. Step 3: Cross multiply
    74,318.72x = 102,561.60 × 42,490.60
  4. Step 4: Simplify right side
    74,318.72x = 4,357,903,920.96
  5. Step 5: Solve for x
    x = 4,357,903,920.96/74,318.72
  6. Step 6: Final answer
    x = 58,638.04

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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.