Home / 56,731.57-78,288.90-31,237.40

Finding the Fourth Proportional to 56,731.57, 78,288.90 and 31,237.40

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Solution

The fourth proportional to 56,731.57, 78,288.90 and 31,237.40 is: 43,107.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.57 : 78,288.90 = 31,237.40 : x
  2. Step 2: Convert to fraction form
    56,731.57/78,288.90 = 31,237.40/x
  3. Step 3: Cross multiply
    56,731.57x = 78,288.90 × 31,237.40
  4. Step 4: Simplify right side
    56,731.57x = 2,445,541,684.86
  5. Step 5: Solve for x
    x = 2,445,541,684.86/56,731.57
  6. Step 6: Final answer
    x = 43,107.24

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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.