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Finding the Fourth Proportional to 78,356.65, 108,134.64 and 44,364.55

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Solution

The fourth proportional to 78,356.65, 108,134.64 and 44,364.55 is: 61,224.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,356.65 : 108,134.64 = 44,364.55 : x
  2. Step 2: Convert to fraction form
    78,356.65/108,134.64 = 44,364.55/x
  3. Step 3: Cross multiply
    78,356.65x = 108,134.64 × 44,364.55
  4. Step 4: Simplify right side
    78,356.65x = 4,797,344,643.01
  5. Step 5: Solve for x
    x = 4,797,344,643.01/78,356.65
  6. Step 6: Final answer
    x = 61,224.47

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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.