Home / 56,951.12-78,513.48-49,077.20

Finding the Fourth Proportional to 56,951.12, 78,513.48 and 49,077.20

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Solution

The fourth proportional to 56,951.12, 78,513.48 and 49,077.20 is: 67,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,951.12 : 78,513.48 = 49,077.20 : x
  2. Step 2: Convert to fraction form
    56,951.12/78,513.48 = 49,077.20/x
  3. Step 3: Cross multiply
    56,951.12x = 78,513.48 × 49,077.20
  4. Step 4: Simplify right side
    56,951.12x = 3,853,221,760.66
  5. Step 5: Solve for x
    x = 3,853,221,760.66/56,951.12
  6. Step 6: Final answer
    x = 67,658.40

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1.5x scale

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.