Home / 86,072.64-129,112.80-26,909.52

Finding the Fourth Proportional to 86,072.64, 129,112.80 and 26,909.52

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Solution

The fourth proportional to 86,072.64, 129,112.80 and 26,909.52 is: 40,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,072.64 : 129,112.80 = 26,909.52 : x
  2. Step 2: Convert to fraction form
    86,072.64/129,112.80 = 26,909.52/x
  3. Step 3: Cross multiply
    86,072.64x = 129,112.80 × 26,909.52
  4. Step 4: Simplify right side
    86,072.64x = 3,474,363,473.86
  5. Step 5: Solve for x
    x = 3,474,363,473.86/86,072.64
  6. Step 6: Final answer
    x = 40,365.48

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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.