Home / 86,570.15-129,838.82-30,397.06

Finding the Fourth Proportional to 86,570.15, 129,838.82 and 30,397.06

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Solution

The fourth proportional to 86,570.15, 129,838.82 and 30,397.06 is: 45,589.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,570.15 : 129,838.82 = 30,397.06 : x
  2. Step 2: Convert to fraction form
    86,570.15/129,838.82 = 30,397.06/x
  3. Step 3: Cross multiply
    86,570.15x = 129,838.82 × 30,397.06
  4. Step 4: Simplify right side
    86,570.15x = 3,946,717,752.68
  5. Step 5: Solve for x
    x = 3,946,717,752.68/86,570.15
  6. Step 6: Final answer
    x = 45,589.82

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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.