Home / 80,730.11-121,095.27-38,600.30

Finding the Fourth Proportional to 80,730.11, 121,095.27 and 38,600.30

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Solution

The fourth proportional to 80,730.11, 121,095.27 and 38,600.30 is: 57,900.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,730.11 : 121,095.27 = 38,600.30 : x
  2. Step 2: Convert to fraction form
    80,730.11/121,095.27 = 38,600.30/x
  3. Step 3: Cross multiply
    80,730.11x = 121,095.27 × 38,600.30
  4. Step 4: Simplify right side
    80,730.11x = 4,674,313,145.10
  5. Step 5: Solve for x
    x = 4,674,313,145.10/80,730.11
  6. Step 6: Final answer
    x = 57,900.50

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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.