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Finding the Fourth Proportional to 86,078.28, 129,124.86 and 23,748.78

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Solution

The fourth proportional to 86,078.28, 129,124.86 and 23,748.78 is: 35,625.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,078.28 : 129,124.86 = 23,748.78 : x
  2. Step 2: Convert to fraction form
    86,078.28/129,124.86 = 23,748.78/x
  3. Step 3: Cross multiply
    86,078.28x = 129,124.86 × 23,748.78
  4. Step 4: Simplify right side
    86,078.28x = 3,066,557,892.67
  5. Step 5: Solve for x
    x = 3,066,557,892.67/86,078.28
  6. Step 6: Final answer
    x = 35,625.22

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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.