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Finding the Fourth Proportional to 67,345.30, 100,908.60 and 42,340.60

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Solution

The fourth proportional to 67,345.30, 100,908.60 and 42,340.60 is: 63,442.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,345.30 : 100,908.60 = 42,340.60 : x
  2. Step 2: Convert to fraction form
    67,345.30/100,908.60 = 42,340.60/x
  3. Step 3: Cross multiply
    67,345.30x = 100,908.60 × 42,340.60
  4. Step 4: Simplify right side
    67,345.30x = 4,272,530,669.16
  5. Step 5: Solve for x
    x = 4,272,530,669.16/67,345.30
  6. Step 6: Final answer
    x = 63,442.15

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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.