Home / 56,808.28-78,398.85-31,314.61

Finding the Fourth Proportional to 56,808.28, 78,398.85 and 31,314.61

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Solution

The fourth proportional to 56,808.28, 78,398.85 and 31,314.61 is: 43,216.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,808.28 : 78,398.85 = 31,314.61 : x
  2. Step 2: Convert to fraction form
    56,808.28/78,398.85 = 31,314.61/x
  3. Step 3: Cross multiply
    56,808.28x = 78,398.85 × 31,314.61
  4. Step 4: Simplify right side
    56,808.28x = 2,455,029,412.20
  5. Step 5: Solve for x
    x = 2,455,029,412.20/56,808.28
  6. Step 6: Final answer
    x = 43,216.05

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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.