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Finding the Fourth Proportional to 67,291.80, 100,952.46 and 19,903.19

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Solution

The fourth proportional to 67,291.80, 100,952.46 and 19,903.19 is: 29,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,291.80 : 100,952.46 = 19,903.19 : x
  2. Step 2: Convert to fraction form
    67,291.80/100,952.46 = 19,903.19/x
  3. Step 3: Cross multiply
    67,291.80x = 100,952.46 × 19,903.19
  4. Step 4: Simplify right side
    67,291.80x = 2,009,275,487.59
  5. Step 5: Solve for x
    x = 2,009,275,487.59/67,291.80
  6. Step 6: Final answer
    x = 29,859.14

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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.