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Finding the Fourth Proportional to 78,479.08, 108,300.66 and 44,494

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Solution

The fourth proportional to 78,479.08, 108,300.66 and 44,494 is: 61,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,479.08 : 108,300.66 = 44,494 : x
  2. Step 2: Convert to fraction form
    78,479.08/108,300.66 = 44,494/x
  3. Step 3: Cross multiply
    78,479.08x = 108,300.66 × 44,494
  4. Step 4: Simplify right side
    78,479.08x = 4,818,729,566.04
  5. Step 5: Solve for x
    x = 4,818,729,566.04/78,479.08
  6. Step 6: Final answer
    x = 61,401.45

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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.