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Finding the Fourth Proportional to 54,294.80, 81,382.80 and 19,216.40

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Solution

The fourth proportional to 54,294.80, 81,382.80 and 19,216.40 is: 28,803.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,294.80 : 81,382.80 = 19,216.40 : x
  2. Step 2: Convert to fraction form
    54,294.80/81,382.80 = 19,216.40/x
  3. Step 3: Cross multiply
    54,294.80x = 81,382.80 × 19,216.40
  4. Step 4: Simplify right side
    54,294.80x = 1,563,884,437.92
  5. Step 5: Solve for x
    x = 1,563,884,437.92/54,294.80
  6. Step 6: Final answer
    x = 28,803.58

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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.