Home / 56,629.59-78,147.19-31,135.93

Finding the Fourth Proportional to 56,629.59, 78,147.19 and 31,135.93

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Solution

The fourth proportional to 56,629.59, 78,147.19 and 31,135.93 is: 42,966.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,629.59 : 78,147.19 = 31,135.93 : x
  2. Step 2: Convert to fraction form
    56,629.59/78,147.19 = 31,135.93/x
  3. Step 3: Cross multiply
    56,629.59x = 78,147.19 × 31,135.93
  4. Step 4: Simplify right side
    56,629.59x = 2,433,185,457.52
  5. Step 5: Solve for x
    x = 2,433,185,457.52/56,629.59
  6. Step 6: Final answer
    x = 42,966.68

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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.