Home / 87,259.68-130,889.52-28,099.98

Finding the Fourth Proportional to 87,259.68, 130,889.52 and 28,099.98

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Solution

The fourth proportional to 87,259.68, 130,889.52 and 28,099.98 is: 42,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,259.68 : 130,889.52 = 28,099.98 : x
  2. Step 2: Convert to fraction form
    87,259.68/130,889.52 = 28,099.98/x
  3. Step 3: Cross multiply
    87,259.68x = 130,889.52 × 28,099.98
  4. Step 4: Simplify right side
    87,259.68x = 3,677,992,894.21
  5. Step 5: Solve for x
    x = 3,677,992,894.21/87,259.68
  6. Step 6: Final answer
    x = 42,149.97

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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.