Home / 86,856.20-130,187.10-49,434.20

Finding the Fourth Proportional to 86,856.20, 130,187.10 and 49,434.20

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Solution

The fourth proportional to 86,856.20, 130,187.10 and 49,434.20 is: 74,095.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,856.20 : 130,187.10 = 49,434.20 : x
  2. Step 2: Convert to fraction form
    86,856.20/130,187.10 = 49,434.20/x
  3. Step 3: Cross multiply
    86,856.20x = 130,187.10 × 49,434.20
  4. Step 4: Simplify right side
    86,856.20x = 6,435,695,138.82
  5. Step 5: Solve for x
    x = 6,435,695,138.82/86,856.20
  6. Step 6: Final answer
    x = 74,095.98

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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.