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Finding the Fourth Proportional to 86,442.64, 129,663.96 and 27,282.94

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Solution

The fourth proportional to 86,442.64, 129,663.96 and 27,282.94 is: 40,924.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,442.64 : 129,663.96 = 27,282.94 : x
  2. Step 2: Convert to fraction form
    86,442.64/129,663.96 = 27,282.94/x
  3. Step 3: Cross multiply
    86,442.64x = 129,663.96 × 27,282.94
  4. Step 4: Simplify right side
    86,442.64x = 3,537,614,040.84
  5. Step 5: Solve for x
    x = 3,537,614,040.84/86,442.64
  6. Step 6: Final answer
    x = 40,924.41

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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.