Home / 72,539.56-108,730.85-30,442.50

Finding the Fourth Proportional to 72,539.56, 108,730.85 and 30,442.50

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Solution

The fourth proportional to 72,539.56, 108,730.85 and 30,442.50 is: 45,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.56 : 108,730.85 = 30,442.50 : x
  2. Step 2: Convert to fraction form
    72,539.56/108,730.85 = 30,442.50/x
  3. Step 3: Cross multiply
    72,539.56x = 108,730.85 × 30,442.50
  4. Step 4: Simplify right side
    72,539.56x = 3,310,038,901.13
  5. Step 5: Solve for x
    x = 3,310,038,901.13/72,539.56
  6. Step 6: Final answer
    x = 45,630.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.