Home / 87,919.32-121,328.73-51,613.66

Finding the Fourth Proportional to 87,919.32, 121,328.73 and 51,613.66

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Solution

The fourth proportional to 87,919.32, 121,328.73 and 51,613.66 is: 71,226.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.32 : 121,328.73 = 51,613.66 : x
  2. Step 2: Convert to fraction form
    87,919.32/121,328.73 = 51,613.66/x
  3. Step 3: Cross multiply
    87,919.32x = 121,328.73 × 51,613.66
  4. Step 4: Simplify right side
    87,919.32x = 6,262,219,818.45
  5. Step 5: Solve for x
    x = 6,262,219,818.45/87,919.32
  6. Step 6: Final answer
    x = 71,226.89

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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.