Home / 87,814.15-121,170.53-51,501.85

Finding the Fourth Proportional to 87,814.15, 121,170.53 and 51,501.85

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Solution

The fourth proportional to 87,814.15, 121,170.53 and 51,501.85 is: 71,064.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,814.15 : 121,170.53 = 51,501.85 : x
  2. Step 2: Convert to fraction form
    87,814.15/121,170.53 = 51,501.85/x
  3. Step 3: Cross multiply
    87,814.15x = 121,170.53 × 51,501.85
  4. Step 4: Simplify right side
    87,814.15x = 6,240,506,286.31
  5. Step 5: Solve for x
    x = 6,240,506,286.31/87,814.15
  6. Step 6: Final answer
    x = 71,064.93

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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.