Home / 87,261.69-120,431.87-51,454.89

Finding the Fourth Proportional to 87,261.69, 120,431.87 and 51,454.89

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Solution

The fourth proportional to 87,261.69, 120,431.87 and 51,454.89 is: 71,014.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,261.69 : 120,431.87 = 51,454.89 : x
  2. Step 2: Convert to fraction form
    87,261.69/120,431.87 = 51,454.89/x
  3. Step 3: Cross multiply
    87,261.69x = 120,431.87 × 51,454.89
  4. Step 4: Simplify right side
    87,261.69x = 6,196,808,366.07
  5. Step 5: Solve for x
    x = 6,196,808,366.07/87,261.69
  6. Step 6: Final answer
    x = 71,014.08

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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.