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Finding the Fourth Proportional to 61,387.88, 91,633.66 and 52,678.76

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Solution

The fourth proportional to 61,387.88, 91,633.66 and 52,678.76 is: 78,633.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,387.88 : 91,633.66 = 52,678.76 : x
  2. Step 2: Convert to fraction form
    61,387.88/91,633.66 = 52,678.76/x
  3. Step 3: Cross multiply
    61,387.88x = 91,633.66 × 52,678.76
  4. Step 4: Simplify right side
    61,387.88x = 4,827,147,583.06
  5. Step 5: Solve for x
    x = 4,827,147,583.06/61,387.88
  6. Step 6: Final answer
    x = 78,633.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.