Home / 87,085.18-120,064.75-56,403.69

Finding the Fourth Proportional to 87,085.18, 120,064.75 and 56,403.69

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Solution

The fourth proportional to 87,085.18, 120,064.75 and 56,403.69 is: 77,764.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,085.18 : 120,064.75 = 56,403.69 : x
  2. Step 2: Convert to fraction form
    87,085.18/120,064.75 = 56,403.69/x
  3. Step 3: Cross multiply
    87,085.18x = 120,064.75 × 56,403.69
  4. Step 4: Simplify right side
    87,085.18x = 6,772,094,938.93
  5. Step 5: Solve for x
    x = 6,772,094,938.93/87,085.18
  6. Step 6: Final answer
    x = 77,764.03

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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.