Home / 87,780.48-131,670.64-28,616.16

Finding the Fourth Proportional to 87,780.48, 131,670.64 and 28,616.16

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Solution

The fourth proportional to 87,780.48, 131,670.64 and 28,616.16 is: 42,924.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,780.48 : 131,670.64 = 28,616.16 : x
  2. Step 2: Convert to fraction form
    87,780.48/131,670.64 = 28,616.16/x
  3. Step 3: Cross multiply
    87,780.48x = 131,670.64 × 28,616.16
  4. Step 4: Simplify right side
    87,780.48x = 3,767,908,101.54
  5. Step 5: Solve for x
    x = 3,767,908,101.54/87,780.48
  6. Step 6: Final answer
    x = 42,924.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.