Home / 74,385.18-102,621.87-47,520.72

Finding the Fourth Proportional to 74,385.18, 102,621.87 and 47,520.72

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Solution

The fourth proportional to 74,385.18, 102,621.87 and 47,520.72 is: 65,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,385.18 : 102,621.87 = 47,520.72 : x
  2. Step 2: Convert to fraction form
    74,385.18/102,621.87 = 47,520.72/x
  3. Step 3: Cross multiply
    74,385.18x = 102,621.87 × 47,520.72
  4. Step 4: Simplify right side
    74,385.18x = 4,876,665,150.15
  5. Step 5: Solve for x
    x = 4,876,665,150.15/74,385.18
  6. Step 6: Final answer
    x = 65,559.63

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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.