Home / 86,266.80-129,400.20-27,108.45

Finding the Fourth Proportional to 86,266.80, 129,400.20 and 27,108.45

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Solution

The fourth proportional to 86,266.80, 129,400.20 and 27,108.45 is: 40,662.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,266.80 : 129,400.20 = 27,108.45 : x
  2. Step 2: Convert to fraction form
    86,266.80/129,400.20 = 27,108.45/x
  3. Step 3: Cross multiply
    86,266.80x = 129,400.20 × 27,108.45
  4. Step 4: Simplify right side
    86,266.80x = 3,507,838,851.69
  5. Step 5: Solve for x
    x = 3,507,838,851.69/86,266.80
  6. Step 6: Final answer
    x = 40,662.68

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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.