Home / 78,495.12-117,726.20-25,892.28

Finding the Fourth Proportional to 78,495.12, 117,726.20 and 25,892.28

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Solution

The fourth proportional to 78,495.12, 117,726.20 and 25,892.28 is: 38,832.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,495.12 : 117,726.20 = 25,892.28 : x
  2. Step 2: Convert to fraction form
    78,495.12/117,726.20 = 25,892.28/x
  3. Step 3: Cross multiply
    78,495.12x = 117,726.20 × 25,892.28
  4. Step 4: Simplify right side
    78,495.12x = 3,048,199,604.27
  5. Step 5: Solve for x
    x = 3,048,199,604.27/78,495.12
  6. Step 6: Final answer
    x = 38,832.98

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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.