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Finding the Fourth Proportional to 78,035.73, 107,689.68 and 44,045.65

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Solution

The fourth proportional to 78,035.73, 107,689.68 and 44,045.65 is: 60,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,035.73 : 107,689.68 = 44,045.65 : x
  2. Step 2: Convert to fraction form
    78,035.73/107,689.68 = 44,045.65/x
  3. Step 3: Cross multiply
    78,035.73x = 107,689.68 × 44,045.65
  4. Step 4: Simplify right side
    78,035.73x = 4,743,261,953.89
  5. Step 5: Solve for x
    x = 4,743,261,953.89/78,035.73
  6. Step 6: Final answer
    x = 60,783.21

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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.