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Finding the Fourth Proportional to 86,404.32, 129,602.64 and 49,494.24

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Solution

The fourth proportional to 86,404.32, 129,602.64 and 49,494.24 is: 74,239.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,404.32 : 129,602.64 = 49,494.24 : x
  2. Step 2: Convert to fraction form
    86,404.32/129,602.64 = 49,494.24/x
  3. Step 3: Cross multiply
    86,404.32x = 129,602.64 × 49,494.24
  4. Step 4: Simplify right side
    86,404.32x = 6,414,584,168.79
  5. Step 5: Solve for x
    x = 6,414,584,168.79/86,404.32
  6. Step 6: Final answer
    x = 74,239.16

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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.