Home / 56,690.19-85,031.84-21,144.66

Finding the Fourth Proportional to 56,690.19, 85,031.84 and 21,144.66

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Solution

The fourth proportional to 56,690.19, 85,031.84 and 21,144.66 is: 31,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,690.19 : 85,031.84 = 21,144.66 : x
  2. Step 2: Convert to fraction form
    56,690.19/85,031.84 = 21,144.66/x
  3. Step 3: Cross multiply
    56,690.19x = 85,031.84 × 21,144.66
  4. Step 4: Simplify right side
    56,690.19x = 1,797,969,079.97
  5. Step 5: Solve for x
    x = 1,797,969,079.97/56,690.19
  6. Step 6: Final answer
    x = 31,715.70

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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.