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Finding the Fourth Proportional to 74,307.52, 111,459.84 and 18,148

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Solution

The fourth proportional to 74,307.52, 111,459.84 and 18,148 is: 27,221.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,307.52 : 111,459.84 = 18,148 : x
  2. Step 2: Convert to fraction form
    74,307.52/111,459.84 = 18,148/x
  3. Step 3: Cross multiply
    74,307.52x = 111,459.84 × 18,148
  4. Step 4: Simplify right side
    74,307.52x = 2,022,773,176.32
  5. Step 5: Solve for x
    x = 2,022,773,176.32/74,307.52
  6. Step 6: Final answer
    x = 27,221.65

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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.