Home / 87,387.21-130,798.89-45,209.21

Finding the Fourth Proportional to 87,387.21, 130,798.89 and 45,209.21

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Solution

The fourth proportional to 87,387.21, 130,798.89 and 45,209.21 is: 67,667.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,387.21 : 130,798.89 = 45,209.21 : x
  2. Step 2: Convert to fraction form
    87,387.21/130,798.89 = 45,209.21/x
  3. Step 3: Cross multiply
    87,387.21x = 130,798.89 × 45,209.21
  4. Step 4: Simplify right side
    87,387.21x = 5,913,314,485.78
  5. Step 5: Solve for x
    x = 5,913,314,485.78/87,387.21
  6. Step 6: Final answer
    x = 67,667.96

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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.