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Finding the Fourth Proportional to 60,321.69, 90,548.73 and 47,921.40

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Solution

The fourth proportional to 60,321.69, 90,548.73 and 47,921.40 is: 71,934.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,321.69 : 90,548.73 = 47,921.40 : x
  2. Step 2: Convert to fraction form
    60,321.69/90,548.73 = 47,921.40/x
  3. Step 3: Cross multiply
    60,321.69x = 90,548.73 × 47,921.40
  4. Step 4: Simplify right side
    60,321.69x = 4,339,221,909.82
  5. Step 5: Solve for x
    x = 4,339,221,909.82/60,321.69
  6. Step 6: Final answer
    x = 71,934.69

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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.