Home / 78,375.10-108,157.95-42,565.71

Finding the Fourth Proportional to 78,375.10, 108,157.95 and 42,565.71

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Solution

The fourth proportional to 78,375.10, 108,157.95 and 42,565.71 is: 58,740.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.10 : 108,157.95 = 42,565.71 : x
  2. Step 2: Convert to fraction form
    78,375.10/108,157.95 = 42,565.71/x
  3. Step 3: Cross multiply
    78,375.10x = 108,157.95 × 42,565.71
  4. Step 4: Simplify right side
    78,375.10x = 4,603,819,368.68
  5. Step 5: Solve for x
    x = 4,603,819,368.68/78,375.10
  6. Step 6: Final answer
    x = 58,740.84

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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.