Home / 87,091.04-130,605.21-30,149.47

Finding the Fourth Proportional to 87,091.04, 130,605.21 and 30,149.47

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Solution

The fourth proportional to 87,091.04, 130,605.21 and 30,149.47 is: 45,213.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,091.04 : 130,605.21 = 30,149.47 : x
  2. Step 2: Convert to fraction form
    87,091.04/130,605.21 = 30,149.47/x
  3. Step 3: Cross multiply
    87,091.04x = 130,605.21 × 30,149.47
  4. Step 4: Simplify right side
    87,091.04x = 3,937,677,860.74
  5. Step 5: Solve for x
    x = 3,937,677,860.74/87,091.04
  6. Step 6: Final answer
    x = 45,213.35

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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.