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Finding the Fourth Proportional to 83,079.37, 124,491.48 and 56,390.68

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Solution

The fourth proportional to 83,079.37, 124,491.48 and 56,390.68 is: 84,499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,079.37 : 124,491.48 = 56,390.68 : x
  2. Step 2: Convert to fraction form
    83,079.37/124,491.48 = 56,390.68/x
  3. Step 3: Cross multiply
    83,079.37x = 124,491.48 × 56,390.68
  4. Step 4: Simplify right side
    83,079.37x = 7,020,159,211.41
  5. Step 5: Solve for x
    x = 7,020,159,211.41/83,079.37
  6. Step 6: Final answer
    x = 84,499.43

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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.