Home / 86,824.20-130,139.10-49,402.20

Finding the Fourth Proportional to 86,824.20, 130,139.10 and 49,402.20

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Solution

The fourth proportional to 86,824.20, 130,139.10 and 49,402.20 is: 74,047.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,824.20 : 130,139.10 = 49,402.20 : x
  2. Step 2: Convert to fraction form
    86,824.20/130,139.10 = 49,402.20/x
  3. Step 3: Cross multiply
    86,824.20x = 130,139.10 × 49,402.20
  4. Step 4: Simplify right side
    86,824.20x = 6,429,157,846.02
  5. Step 5: Solve for x
    x = 6,429,157,846.02/86,824.20
  6. Step 6: Final answer
    x = 74,047.99

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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.