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Finding the Fourth Proportional to 45,191.80, 62,327.84 and 31,807.40

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Solution

The fourth proportional to 45,191.80, 62,327.84 and 31,807.40 is: 43,868.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,191.80 : 62,327.84 = 31,807.40 : x
  2. Step 2: Convert to fraction form
    45,191.80/62,327.84 = 31,807.40/x
  3. Step 3: Cross multiply
    45,191.80x = 62,327.84 × 31,807.40
  4. Step 4: Simplify right side
    45,191.80x = 1,982,486,538.02
  5. Step 5: Solve for x
    x = 1,982,486,538.02/45,191.80
  6. Step 6: Final answer
    x = 43,868.28

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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.