Home / 56,691.12-78,230.25-31,192.32

Finding the Fourth Proportional to 56,691.12, 78,230.25 and 31,192.32

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Solution

The fourth proportional to 56,691.12, 78,230.25 and 31,192.32 is: 43,043.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,691.12 : 78,230.25 = 31,192.32 : x
  2. Step 2: Convert to fraction form
    56,691.12/78,230.25 = 31,192.32/x
  3. Step 3: Cross multiply
    56,691.12x = 78,230.25 × 31,192.32
  4. Step 4: Simplify right side
    56,691.12x = 2,440,182,991.68
  5. Step 5: Solve for x
    x = 2,440,182,991.68/56,691.12
  6. Step 6: Final answer
    x = 43,043.48

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1.5x scale

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.