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Finding the Fourth Proportional to 56,423.70, 77,829.30 and 36,306.72

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Solution

The fourth proportional to 56,423.70, 77,829.30 and 36,306.72 is: 50,080.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,423.70 : 77,829.30 = 36,306.72 : x
  2. Step 2: Convert to fraction form
    56,423.70/77,829.30 = 36,306.72/x
  3. Step 3: Cross multiply
    56,423.70x = 77,829.30 × 36,306.72
  4. Step 4: Simplify right side
    56,423.70x = 2,825,726,602.90
  5. Step 5: Solve for x
    x = 2,825,726,602.90/56,423.70
  6. Step 6: Final answer
    x = 50,080.49

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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.