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Finding the Fourth Proportional to 86,899.80, 130,349.70 and 27,737.40

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Solution

The fourth proportional to 86,899.80, 130,349.70 and 27,737.40 is: 41,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,899.80 : 130,349.70 = 27,737.40 : x
  2. Step 2: Convert to fraction form
    86,899.80/130,349.70 = 27,737.40/x
  3. Step 3: Cross multiply
    86,899.80x = 130,349.70 × 27,737.40
  4. Step 4: Simplify right side
    86,899.80x = 3,615,561,768.78
  5. Step 5: Solve for x
    x = 3,615,561,768.78/86,899.80
  6. Step 6: Final answer
    x = 41,606.10

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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.