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Finding the Fourth Proportional to 43,428.80, 59,928.48 and 29,300.80

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Solution

The fourth proportional to 43,428.80, 59,928.48 and 29,300.80 is: 40,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,428.80 : 59,928.48 = 29,300.80 : x
  2. Step 2: Convert to fraction form
    43,428.80/59,928.48 = 29,300.80/x
  3. Step 3: Cross multiply
    43,428.80x = 59,928.48 × 29,300.80
  4. Step 4: Simplify right side
    43,428.80x = 1,755,952,406.78
  5. Step 5: Solve for x
    x = 1,755,952,406.78/43,428.80
  6. Step 6: Final answer
    x = 40,432.90

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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.