Home / 56,632.77-78,149.19-31,138.49

Finding the Fourth Proportional to 56,632.77, 78,149.19 and 31,138.49

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Solution

The fourth proportional to 56,632.77, 78,149.19 and 31,138.49 is: 42,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,632.77 : 78,149.19 = 31,138.49 : x
  2. Step 2: Convert to fraction form
    56,632.77/78,149.19 = 31,138.49/x
  3. Step 3: Cross multiply
    56,632.77x = 78,149.19 × 31,138.49
  4. Step 4: Simplify right side
    56,632.77x = 2,433,447,380.58
  5. Step 5: Solve for x
    x = 2,433,447,380.58/56,632.77
  6. Step 6: Final answer
    x = 42,968.89

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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.