Home / 87,209.84-120,372.58-51,423.68

Finding the Fourth Proportional to 87,209.84, 120,372.58 and 51,423.68

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Solution

The fourth proportional to 87,209.84, 120,372.58 and 51,423.68 is: 70,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,209.84 : 120,372.58 = 51,423.68 : x
  2. Step 2: Convert to fraction form
    87,209.84/120,372.58 = 51,423.68/x
  3. Step 3: Cross multiply
    87,209.84x = 120,372.58 × 51,423.68
  4. Step 4: Simplify right side
    87,209.84x = 6,190,001,034.69
  5. Step 5: Solve for x
    x = 6,190,001,034.69/87,209.84
  6. Step 6: Final answer
    x = 70,978.24

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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.