Home / 56,731.94-78,292.22-31,239.42

Finding the Fourth Proportional to 56,731.94, 78,292.22 and 31,239.42

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Solution

The fourth proportional to 56,731.94, 78,292.22 and 31,239.42 is: 43,111.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.94 : 78,292.22 = 31,239.42 : x
  2. Step 2: Convert to fraction form
    56,731.94/78,292.22 = 31,239.42/x
  3. Step 3: Cross multiply
    56,731.94x = 78,292.22 × 31,239.42
  4. Step 4: Simplify right side
    56,731.94x = 2,445,803,387.12
  5. Step 5: Solve for x
    x = 2,445,803,387.12/56,731.94
  6. Step 6: Final answer
    x = 43,111.57

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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.