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Finding the Fourth Proportional to 87,774.93, 121,129.41 and 47,488.67

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Solution

The fourth proportional to 87,774.93, 121,129.41 and 47,488.67 is: 65,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,774.93 : 121,129.41 = 47,488.67 : x
  2. Step 2: Convert to fraction form
    87,774.93/121,129.41 = 47,488.67/x
  3. Step 3: Cross multiply
    87,774.93x = 121,129.41 × 47,488.67
  4. Step 4: Simplify right side
    87,774.93x = 5,752,273,973.14
  5. Step 5: Solve for x
    x = 5,752,273,973.14/87,774.93
  6. Step 6: Final answer
    x = 65,534.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.