Home / 78,358.83-108,132.39-42,548.10

Finding the Fourth Proportional to 78,358.83, 108,132.39 and 42,548.10

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Solution

The fourth proportional to 78,358.83, 108,132.39 and 42,548.10 is: 58,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,358.83 : 108,132.39 = 42,548.10 : x
  2. Step 2: Convert to fraction form
    78,358.83/108,132.39 = 42,548.10/x
  3. Step 3: Cross multiply
    78,358.83x = 108,132.39 × 42,548.10
  4. Step 4: Simplify right side
    78,358.83x = 4,600,827,742.96
  5. Step 5: Solve for x
    x = 4,600,827,742.96/78,358.83
  6. Step 6: Final answer
    x = 58,714.86

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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.