Home / 79,557.28-119,113.20-42,539.68

Finding the Fourth Proportional to 79,557.28, 119,113.20 and 42,539.68

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Solution

The fourth proportional to 79,557.28, 119,113.20 and 42,539.68 is: 63,690.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,557.28 : 119,113.20 = 42,539.68 : x
  2. Step 2: Convert to fraction form
    79,557.28/119,113.20 = 42,539.68/x
  3. Step 3: Cross multiply
    79,557.28x = 119,113.20 × 42,539.68
  4. Step 4: Simplify right side
    79,557.28x = 5,067,037,411.78
  5. Step 5: Solve for x
    x = 5,067,037,411.78/79,557.28
  6. Step 6: Final answer
    x = 63,690.43

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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.