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Finding the Fourth Proportional to 78,238.52, 107,975.12 and 44,247.68

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Solution

The fourth proportional to 78,238.52, 107,975.12 and 44,247.68 is: 61,065.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,238.52 : 107,975.12 = 44,247.68 : x
  2. Step 2: Convert to fraction form
    78,238.52/107,975.12 = 44,247.68/x
  3. Step 3: Cross multiply
    78,238.52x = 107,975.12 × 44,247.68
  4. Step 4: Simplify right side
    78,238.52x = 4,777,648,557.72
  5. Step 5: Solve for x
    x = 4,777,648,557.72/78,238.52
  6. Step 6: Final answer
    x = 61,065.17

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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.