Home / 78,282.38-117,443.61-25,692.32

Finding the Fourth Proportional to 78,282.38, 117,443.61 and 25,692.32

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Solution

The fourth proportional to 78,282.38, 117,443.61 and 25,692.32 is: 38,545.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282.38 : 117,443.61 = 25,692.32 : x
  2. Step 2: Convert to fraction form
    78,282.38/117,443.61 = 25,692.32/x
  3. Step 3: Cross multiply
    78,282.38x = 117,443.61 × 25,692.32
  4. Step 4: Simplify right side
    78,282.38x = 3,017,398,222.86
  5. Step 5: Solve for x
    x = 3,017,398,222.86/78,282.38
  6. Step 6: Final answer
    x = 38,545.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.