Home / 86,569.40-129,829.80-27,423.20

Finding the Fourth Proportional to 86,569.40, 129,829.80 and 27,423.20

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Solution

The fourth proportional to 86,569.40, 129,829.80 and 27,423.20 is: 41,127.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.40 : 129,829.80 = 27,423.20 : x
  2. Step 2: Convert to fraction form
    86,569.40/129,829.80 = 27,423.20/x
  3. Step 3: Cross multiply
    86,569.40x = 129,829.80 × 27,423.20
  4. Step 4: Simplify right side
    86,569.40x = 3,560,348,571.36
  5. Step 5: Solve for x
    x = 3,560,348,571.36/86,569.40
  6. Step 6: Final answer
    x = 41,127.10

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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.