Home / 56,810.60-78,403.10-31,321.47

Finding the Fourth Proportional to 56,810.60, 78,403.10 and 31,321.47

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Solution

The fourth proportional to 56,810.60, 78,403.10 and 31,321.47 is: 43,226.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.60 : 78,403.10 = 31,321.47 : x
  2. Step 2: Convert to fraction form
    56,810.60/78,403.10 = 31,321.47/x
  3. Step 3: Cross multiply
    56,810.60x = 78,403.10 × 31,321.47
  4. Step 4: Simplify right side
    56,810.60x = 2,455,700,344.56
  5. Step 5: Solve for x
    x = 2,455,700,344.56/56,810.60
  6. Step 6: Final answer
    x = 43,226.09

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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.