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Finding the Fourth Proportional to 86,074.64, 129,115.80 and 26,911.52

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Solution

The fourth proportional to 86,074.64, 129,115.80 and 26,911.52 is: 40,368.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,074.64 : 129,115.80 = 26,911.52 : x
  2. Step 2: Convert to fraction form
    86,074.64/129,115.80 = 26,911.52/x
  3. Step 3: Cross multiply
    86,074.64x = 129,115.80 × 26,911.52
  4. Step 4: Simplify right side
    86,074.64x = 3,474,702,434.02
  5. Step 5: Solve for x
    x = 3,474,702,434.02/86,074.64
  6. Step 6: Final answer
    x = 40,368.48

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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.