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Finding the Fourth Proportional to 72,011.91, 107,914.91 and 52,886.53

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Solution

The fourth proportional to 72,011.91, 107,914.91 and 52,886.53 is: 79,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,011.91 : 107,914.91 = 52,886.53 : x
  2. Step 2: Convert to fraction form
    72,011.91/107,914.91 = 52,886.53/x
  3. Step 3: Cross multiply
    72,011.91x = 107,914.91 × 52,886.53
  4. Step 4: Simplify right side
    72,011.91x = 5,707,245,125.16
  5. Step 5: Solve for x
    x = 5,707,245,125.16/72,011.91
  6. Step 6: Final answer
    x = 79,254.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.