Home / 86,388.90-129,547.98-30,217.02

Finding the Fourth Proportional to 86,388.90, 129,547.98 and 30,217.02

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Solution

The fourth proportional to 86,388.90, 129,547.98 and 30,217.02 is: 45,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,388.90 : 129,547.98 = 30,217.02 : x
  2. Step 2: Convert to fraction form
    86,388.90/129,547.98 = 30,217.02/x
  3. Step 3: Cross multiply
    86,388.90x = 129,547.98 × 30,217.02
  4. Step 4: Simplify right side
    86,388.90x = 3,914,553,902.62
  5. Step 5: Solve for x
    x = 3,914,553,902.62/86,388.90
  6. Step 6: Final answer
    x = 45,313.16

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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.