Home / 78,655.10-108,546.02-42,847.02

Finding the Fourth Proportional to 78,655.10, 108,546.02 and 42,847.02

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Solution

The fourth proportional to 78,655.10, 108,546.02 and 42,847.02 is: 59,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,655.10 : 108,546.02 = 42,847.02 : x
  2. Step 2: Convert to fraction form
    78,655.10/108,546.02 = 42,847.02/x
  3. Step 3: Cross multiply
    78,655.10x = 108,546.02 × 42,847.02
  4. Step 4: Simplify right side
    78,655.10x = 4,650,873,489.86
  5. Step 5: Solve for x
    x = 4,650,873,489.86/78,655.10
  6. Step 6: Final answer
    x = 59,129.97

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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.