Home / 56,197.17-84,287.25-21,128.63

Finding the Fourth Proportional to 56,197.17, 84,287.25 and 21,128.63

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Solution

The fourth proportional to 56,197.17, 84,287.25 and 21,128.63 is: 31,689.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,197.17 : 84,287.25 = 21,128.63 : x
  2. Step 2: Convert to fraction form
    56,197.17/84,287.25 = 21,128.63/x
  3. Step 3: Cross multiply
    56,197.17x = 84,287.25 × 21,128.63
  4. Step 4: Simplify right side
    56,197.17x = 1,780,873,697.53
  5. Step 5: Solve for x
    x = 1,780,873,697.53/56,197.17
  6. Step 6: Final answer
    x = 31,689.74

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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.