Home / 78,230.20-107,957.46-42,420.10

Finding the Fourth Proportional to 78,230.20, 107,957.46 and 42,420.10

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Solution

The fourth proportional to 78,230.20, 107,957.46 and 42,420.10 is: 58,539.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,230.20 : 107,957.46 = 42,420.10 : x
  2. Step 2: Convert to fraction form
    78,230.20/107,957.46 = 42,420.10/x
  3. Step 3: Cross multiply
    78,230.20x = 107,957.46 × 42,420.10
  4. Step 4: Simplify right side
    78,230.20x = 4,579,566,248.95
  5. Step 5: Solve for x
    x = 4,579,566,248.95/78,230.20
  6. Step 6: Final answer
    x = 58,539.62

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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.