Home / 56,402.20-84,638.40-51,146.70

Finding the Fourth Proportional to 56,402.20, 84,638.40 and 51,146.70

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Solution

The fourth proportional to 56,402.20, 84,638.40 and 51,146.70 is: 76,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,402.20 : 84,638.40 = 51,146.70 : x
  2. Step 2: Convert to fraction form
    56,402.20/84,638.40 = 51,146.70/x
  3. Step 3: Cross multiply
    56,402.20x = 84,638.40 × 51,146.70
  4. Step 4: Simplify right side
    56,402.20x = 4,328,974,853.28
  5. Step 5: Solve for x
    x = 4,328,974,853.28/56,402.20
  6. Step 6: Final answer
    x = 76,751.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.