Home / 56,913.76-78,531.60-31,763.20

Finding the Fourth Proportional to 56,913.76, 78,531.60 and 31,763.20

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Solution

The fourth proportional to 56,913.76, 78,531.60 and 31,763.20 is: 43,827.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.76 : 78,531.60 = 31,763.20 : x
  2. Step 2: Convert to fraction form
    56,913.76/78,531.60 = 31,763.20/x
  3. Step 3: Cross multiply
    56,913.76x = 78,531.60 × 31,763.20
  4. Step 4: Simplify right side
    56,913.76x = 2,494,414,917.12
  5. Step 5: Solve for x
    x = 2,494,414,917.12/56,913.76
  6. Step 6: Final answer
    x = 43,827.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.