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Finding the Fourth Proportional to 72,054.66, 107,860.53 and 61,425.84

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Solution

The fourth proportional to 72,054.66, 107,860.53 and 61,425.84 is: 91,949.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,054.66 : 107,860.53 = 61,425.84 : x
  2. Step 2: Convert to fraction form
    72,054.66/107,860.53 = 61,425.84/x
  3. Step 3: Cross multiply
    72,054.66x = 107,860.53 × 61,425.84
  4. Step 4: Simplify right side
    72,054.66x = 6,625,423,658.10
  5. Step 5: Solve for x
    x = 6,625,423,658.10/72,054.66
  6. Step 6: Final answer
    x = 91,949.97

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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.