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Finding the Fourth Proportional to 72,879.46, 109,246.11 and 25,457.74

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Solution

The fourth proportional to 72,879.46, 109,246.11 and 25,457.74 is: 38,161.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,879.46 : 109,246.11 = 25,457.74 : x
  2. Step 2: Convert to fraction form
    72,879.46/109,246.11 = 25,457.74/x
  3. Step 3: Cross multiply
    72,879.46x = 109,246.11 × 25,457.74
  4. Step 4: Simplify right side
    72,879.46x = 2,781,159,064.39
  5. Step 5: Solve for x
    x = 2,781,159,064.39/72,879.46
  6. Step 6: Final answer
    x = 38,161.08

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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.