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Finding the Fourth Proportional to 67,402.72, 100,412.20 and 64,370.08

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Solution

The fourth proportional to 67,402.72, 100,412.20 and 64,370.08 is: 95,894.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,402.72 : 100,412.20 = 64,370.08 : x
  2. Step 2: Convert to fraction form
    67,402.72/100,412.20 = 64,370.08/x
  3. Step 3: Cross multiply
    67,402.72x = 100,412.20 × 64,370.08
  4. Step 4: Simplify right side
    67,402.72x = 6,463,541,346.98
  5. Step 5: Solve for x
    x = 6,463,541,346.98/67,402.72
  6. Step 6: Final answer
    x = 95,894.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.