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Finding the Fourth Proportional to 54,040.80, 81,158.40 and 39,266.40

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Solution

The fourth proportional to 54,040.80, 81,158.40 and 39,266.40 is: 58,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,040.80 : 81,158.40 = 39,266.40 : x
  2. Step 2: Convert to fraction form
    54,040.80/81,158.40 = 39,266.40/x
  3. Step 3: Cross multiply
    54,040.80x = 81,158.40 × 39,266.40
  4. Step 4: Simplify right side
    54,040.80x = 3,186,798,197.76
  5. Step 5: Solve for x
    x = 3,186,798,197.76/54,040.80
  6. Step 6: Final answer
    x = 58,970.23

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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.