Home / 78,760.20-108,690.02-42,949.90

Finding the Fourth Proportional to 78,760.20, 108,690.02 and 42,949.90

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Solution

The fourth proportional to 78,760.20, 108,690.02 and 42,949.90 is: 59,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760.20 : 108,690.02 = 42,949.90 : x
  2. Step 2: Convert to fraction form
    78,760.20/108,690.02 = 42,949.90/x
  3. Step 3: Cross multiply
    78,760.20x = 108,690.02 × 42,949.90
  4. Step 4: Simplify right side
    78,760.20x = 4,668,225,490.00
  5. Step 5: Solve for x
    x = 4,668,225,490.00/78,760.20
  6. Step 6: Final answer
    x = 59,271.38

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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.