Home / 87,416.79-120,633.57-51,121.71

Finding the Fourth Proportional to 87,416.79, 120,633.57 and 51,121.71

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Solution

The fourth proportional to 87,416.79, 120,633.57 and 51,121.71 is: 70,547.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,416.79 : 120,633.57 = 51,121.71 : x
  2. Step 2: Convert to fraction form
    87,416.79/120,633.57 = 51,121.71/x
  3. Step 3: Cross multiply
    87,416.79x = 120,633.57 × 51,121.71
  4. Step 4: Simplify right side
    87,416.79x = 6,166,994,381.80
  5. Step 5: Solve for x
    x = 6,166,994,381.80/87,416.79
  6. Step 6: Final answer
    x = 70,547.02

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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.