Home / 74,187.50-102,378.76-40,652.78

Finding the Fourth Proportional to 74,187.50, 102,378.76 and 40,652.78

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Solution

The fourth proportional to 74,187.50, 102,378.76 and 40,652.78 is: 56,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,187.50 : 102,378.76 = 40,652.78 : x
  2. Step 2: Convert to fraction form
    74,187.50/102,378.76 = 40,652.78/x
  3. Step 3: Cross multiply
    74,187.50x = 102,378.76 × 40,652.78
  4. Step 4: Simplify right side
    74,187.50x = 4,161,981,206.95
  5. Step 5: Solve for x
    x = 4,161,981,206.95/74,187.50
  6. Step 6: Final answer
    x = 56,100.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.