Home / 56,722.10-85,115.55-21,686.90

Finding the Fourth Proportional to 56,722.10, 85,115.55 and 21,686.90

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Solution

The fourth proportional to 56,722.10, 85,115.55 and 21,686.90 is: 32,542.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,722.10 : 85,115.55 = 21,686.90 : x
  2. Step 2: Convert to fraction form
    56,722.10/85,115.55 = 21,686.90/x
  3. Step 3: Cross multiply
    56,722.10x = 85,115.55 × 21,686.90
  4. Step 4: Simplify right side
    56,722.10x = 1,845,892,421.30
  5. Step 5: Solve for x
    x = 1,845,892,421.30/56,722.10
  6. Step 6: Final answer
    x = 32,542.74

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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.