Home / 56,754.90-78,319.65-31,603.86

Finding the Fourth Proportional to 56,754.90, 78,319.65 and 31,603.86

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Solution

The fourth proportional to 56,754.90, 78,319.65 and 31,603.86 is: 43,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,754.90 : 78,319.65 = 31,603.86 : x
  2. Step 2: Convert to fraction form
    56,754.90/78,319.65 = 31,603.86/x
  3. Step 3: Cross multiply
    56,754.90x = 78,319.65 × 31,603.86
  4. Step 4: Simplify right side
    56,754.90x = 2,475,203,253.85
  5. Step 5: Solve for x
    x = 2,475,203,253.85/56,754.90
  6. Step 6: Final answer
    x = 43,612.15

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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.