Home / 86,467.40-129,701.10-76,844.60

Finding the Fourth Proportional to 86,467.40, 129,701.10 and 76,844.60

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Solution

The fourth proportional to 86,467.40, 129,701.10 and 76,844.60 is: 115,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,467.40 : 129,701.10 = 76,844.60 : x
  2. Step 2: Convert to fraction form
    86,467.40/129,701.10 = 76,844.60/x
  3. Step 3: Cross multiply
    86,467.40x = 129,701.10 × 76,844.60
  4. Step 4: Simplify right side
    86,467.40x = 9,966,829,149.06
  5. Step 5: Solve for x
    x = 9,966,829,149.06/86,467.40
  6. Step 6: Final answer
    x = 115,266.90

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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.