Home / 78,464.28-108,279.42-42,655.19

Finding the Fourth Proportional to 78,464.28, 108,279.42 and 42,655.19

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Solution

The fourth proportional to 78,464.28, 108,279.42 and 42,655.19 is: 58,863.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,464.28 : 108,279.42 = 42,655.19 : x
  2. Step 2: Convert to fraction form
    78,464.28/108,279.42 = 42,655.19/x
  3. Step 3: Cross multiply
    78,464.28x = 108,279.42 × 42,655.19
  4. Step 4: Simplify right side
    78,464.28x = 4,618,679,069.13
  5. Step 5: Solve for x
    x = 4,618,679,069.13/78,464.28
  6. Step 6: Final answer
    x = 58,863.46

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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.