Home / 78,875.38-108,847.20-43,065.28

Finding the Fourth Proportional to 78,875.38, 108,847.20 and 43,065.28

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Solution

The fourth proportional to 78,875.38, 108,847.20 and 43,065.28 is: 59,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,875.38 : 108,847.20 = 43,065.28 : x
  2. Step 2: Convert to fraction form
    78,875.38/108,847.20 = 43,065.28/x
  3. Step 3: Cross multiply
    78,875.38x = 108,847.20 × 43,065.28
  4. Step 4: Simplify right side
    78,875.38x = 4,687,535,145.22
  5. Step 5: Solve for x
    x = 4,687,535,145.22/78,875.38
  6. Step 6: Final answer
    x = 59,429.64

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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.