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Finding the Fourth Proportional to 86,720.90, 130,053.67 and 27,542.73

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Solution

The fourth proportional to 86,720.90, 130,053.67 and 27,542.73 is: 41,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.90 : 130,053.67 = 27,542.73 : x
  2. Step 2: Convert to fraction form
    86,720.90/130,053.67 = 27,542.73/x
  3. Step 3: Cross multiply
    86,720.90x = 130,053.67 × 27,542.73
  4. Step 4: Simplify right side
    86,720.90x = 3,582,032,980.61
  5. Step 5: Solve for x
    x = 3,582,032,980.61/86,720.90
  6. Step 6: Final answer
    x = 41,305.30

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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.