Home / 56,720.03-85,077.45-21,178.58

Finding the Fourth Proportional to 56,720.03, 85,077.45 and 21,178.58

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Solution

The fourth proportional to 56,720.03, 85,077.45 and 21,178.58 is: 31,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,720.03 : 85,077.45 = 21,178.58 : x
  2. Step 2: Convert to fraction form
    56,720.03/85,077.45 = 21,178.58/x
  3. Step 3: Cross multiply
    56,720.03x = 85,077.45 × 21,178.58
  4. Step 4: Simplify right side
    56,720.03x = 1,801,819,155.63
  5. Step 5: Solve for x
    x = 1,801,819,155.63/56,720.03
  6. Step 6: Final answer
    x = 31,766.90

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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.