Home / 78,261.20-108,000.51-42,451.10

Finding the Fourth Proportional to 78,261.20, 108,000.51 and 42,451.10

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Solution

The fourth proportional to 78,261.20, 108,000.51 and 42,451.10 is: 58,582.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,261.20 : 108,000.51 = 42,451.10 : x
  2. Step 2: Convert to fraction form
    78,261.20/108,000.51 = 42,451.10/x
  3. Step 3: Cross multiply
    78,261.20x = 108,000.51 × 42,451.10
  4. Step 4: Simplify right side
    78,261.20x = 4,584,740,450.06
  5. Step 5: Solve for x
    x = 4,584,740,450.06/78,261.20
  6. Step 6: Final answer
    x = 58,582.55

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1.5x scale

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.