Home / 86,059.20-128,979.27-48,640.14

Finding the Fourth Proportional to 86,059.20, 128,979.27 and 48,640.14

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Solution

The fourth proportional to 86,059.20, 128,979.27 and 48,640.14 is: 72,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,059.20 : 128,979.27 = 48,640.14 : x
  2. Step 2: Convert to fraction form
    86,059.20/128,979.27 = 48,640.14/x
  3. Step 3: Cross multiply
    86,059.20x = 128,979.27 × 48,640.14
  4. Step 4: Simplify right side
    86,059.20x = 6,273,569,749.90
  5. Step 5: Solve for x
    x = 6,273,569,749.90/86,059.20
  6. Step 6: Final answer
    x = 72,898.30

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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.