Home / 57,188.95-78,920.76-31,699.15

Finding the Fourth Proportional to 57,188.95, 78,920.76 and 31,699.15

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Solution

The fourth proportional to 57,188.95, 78,920.76 and 31,699.15 is: 43,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,188.95 : 78,920.76 = 31,699.15 : x
  2. Step 2: Convert to fraction form
    57,188.95/78,920.76 = 31,699.15/x
  3. Step 3: Cross multiply
    57,188.95x = 78,920.76 × 31,699.15
  4. Step 4: Simplify right side
    57,188.95x = 2,501,721,009.35
  5. Step 5: Solve for x
    x = 2,501,721,009.35/57,188.95
  6. Step 6: Final answer
    x = 43,744.83

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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.