Home / 87,111-130,654.20-27,938.99

Finding the Fourth Proportional to 87,111, 130,654.20 and 27,938.99

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Solution

The fourth proportional to 87,111, 130,654.20 and 27,938.99 is: 41,904.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,111 : 130,654.20 = 27,938.99 : x
  2. Step 2: Convert to fraction form
    87,111/130,654.20 = 27,938.99/x
  3. Step 3: Cross multiply
    87,111x = 130,654.20 × 27,938.99
  4. Step 4: Simplify right side
    87,111x = 3,650,346,387.26
  5. Step 5: Solve for x
    x = 3,650,346,387.26/87,111
  6. Step 6: Final answer
    x = 41,904.54

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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.