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Finding the Fourth Proportional to 78,570.71, 108,408.66 and 46,306.61

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Solution

The fourth proportional to 78,570.71, 108,408.66 and 46,306.61 is: 63,891.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,570.71 : 108,408.66 = 46,306.61 : x
  2. Step 2: Convert to fraction form
    78,570.71/108,408.66 = 46,306.61/x
  3. Step 3: Cross multiply
    78,570.71x = 108,408.66 × 46,306.61
  4. Step 4: Simplify right side
    78,570.71x = 5,020,037,230.08
  5. Step 5: Solve for x
    x = 5,020,037,230.08/78,570.71
  6. Step 6: Final answer
    x = 63,891.97

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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.