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Finding the Fourth Proportional to 68,404.74, 94,400.14 and 42,912.18

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Solution

The fourth proportional to 68,404.74, 94,400.14 and 42,912.18 is: 59,219.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,404.74 : 94,400.14 = 42,912.18 : x
  2. Step 2: Convert to fraction form
    68,404.74/94,400.14 = 42,912.18/x
  3. Step 3: Cross multiply
    68,404.74x = 94,400.14 × 42,912.18
  4. Step 4: Simplify right side
    68,404.74x = 4,050,915,799.71
  5. Step 5: Solve for x
    x = 4,050,915,799.71/68,404.74
  6. Step 6: Final answer
    x = 59,219.81

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1.5x scale

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.