Home / 87,740.55-121,081.58-47,454.36

Finding the Fourth Proportional to 87,740.55, 121,081.58 and 47,454.36

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Solution

The fourth proportional to 87,740.55, 121,081.58 and 47,454.36 is: 65,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,740.55 : 121,081.58 = 47,454.36 : x
  2. Step 2: Convert to fraction form
    87,740.55/121,081.58 = 47,454.36/x
  3. Step 3: Cross multiply
    87,740.55x = 121,081.58 × 47,454.36
  4. Step 4: Simplify right side
    87,740.55x = 5,745,848,649.42
  5. Step 5: Solve for x
    x = 5,745,848,649.42/87,740.55
  6. Step 6: Final answer
    x = 65,486.81

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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.