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Finding the Fourth Proportional to 67,445.58, 100,917.81 and 42,368.22

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Solution

The fourth proportional to 67,445.58, 100,917.81 and 42,368.22 is: 63,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,445.58 : 100,917.81 = 42,368.22 : x
  2. Step 2: Convert to fraction form
    67,445.58/100,917.81 = 42,368.22/x
  3. Step 3: Cross multiply
    67,445.58x = 100,917.81 × 42,368.22
  4. Step 4: Simplify right side
    67,445.58x = 4,275,707,976.00
  5. Step 5: Solve for x
    x = 4,275,707,976.00/67,445.58
  6. Step 6: Final answer
    x = 63,394.93

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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.