Home / 78,088.32-117,158.40-25,499.52

Finding the Fourth Proportional to 78,088.32, 117,158.40 and 25,499.52

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Solution

The fourth proportional to 78,088.32, 117,158.40 and 25,499.52 is: 38,257.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,088.32 : 117,158.40 = 25,499.52 : x
  2. Step 2: Convert to fraction form
    78,088.32/117,158.40 = 25,499.52/x
  3. Step 3: Cross multiply
    78,088.32x = 117,158.40 × 25,499.52
  4. Step 4: Simplify right side
    78,088.32x = 2,987,482,963.97
  5. Step 5: Solve for x
    x = 2,987,482,963.97/78,088.32
  6. Step 6: Final answer
    x = 38,257.74

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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.