Home / 78,375.36-108,159.12-42,565.44

Finding the Fourth Proportional to 78,375.36, 108,159.12 and 42,565.44

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Solution

The fourth proportional to 78,375.36, 108,159.12 and 42,565.44 is: 58,740.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.36 : 108,159.12 = 42,565.44 : x
  2. Step 2: Convert to fraction form
    78,375.36/108,159.12 = 42,565.44/x
  3. Step 3: Cross multiply
    78,375.36x = 108,159.12 × 42,565.44
  4. Step 4: Simplify right side
    78,375.36x = 4,603,840,532.81
  5. Step 5: Solve for x
    x = 4,603,840,532.81/78,375.36
  6. Step 6: Final answer
    x = 58,740.92

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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.