Home / 87,154.61-130,688.74-30,986.31

Finding the Fourth Proportional to 87,154.61, 130,688.74 and 30,986.31

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Solution

The fourth proportional to 87,154.61, 130,688.74 and 30,986.31 is: 46,464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,154.61 : 130,688.74 = 30,986.31 : x
  2. Step 2: Convert to fraction form
    87,154.61/130,688.74 = 30,986.31/x
  3. Step 3: Cross multiply
    87,154.61x = 130,688.74 × 30,986.31
  4. Step 4: Simplify right side
    87,154.61x = 4,049,561,811.15
  5. Step 5: Solve for x
    x = 4,049,561,811.15/87,154.61
  6. Step 6: Final answer
    x = 46,464.11

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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.