Home / 56,763.18-85,115.21-21,195.25

Finding the Fourth Proportional to 56,763.18, 85,115.21 and 21,195.25

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Solution

The fourth proportional to 56,763.18, 85,115.21 and 21,195.25 is: 31,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,763.18 : 85,115.21 = 21,195.25 : x
  2. Step 2: Convert to fraction form
    56,763.18/85,115.21 = 21,195.25/x
  3. Step 3: Cross multiply
    56,763.18x = 85,115.21 × 21,195.25
  4. Step 4: Simplify right side
    56,763.18x = 1,804,038,314.76
  5. Step 5: Solve for x
    x = 1,804,038,314.76/56,763.18
  6. Step 6: Final answer
    x = 31,781.84

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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.