Home / 86,560.17-129,897-30,398.82

Finding the Fourth Proportional to 86,560.17, 129,897 and 30,398.82

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Solution

The fourth proportional to 86,560.17, 129,897 and 30,398.82 is: 45,618.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,560.17 : 129,897 = 30,398.82 : x
  2. Step 2: Convert to fraction form
    86,560.17/129,897 = 30,398.82/x
  3. Step 3: Cross multiply
    86,560.17x = 129,897 × 30,398.82
  4. Step 4: Simplify right side
    86,560.17x = 3,948,715,521.54
  5. Step 5: Solve for x
    x = 3,948,715,521.54/86,560.17
  6. Step 6: Final answer
    x = 45,618.16

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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.