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Finding the Fourth Proportional to 54,503.40, 81,779.40 and 19,468.20

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Solution

The fourth proportional to 54,503.40, 81,779.40 and 19,468.20 is: 29,210.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,503.40 : 81,779.40 = 19,468.20 : x
  2. Step 2: Convert to fraction form
    54,503.40/81,779.40 = 19,468.20/x
  3. Step 3: Cross multiply
    54,503.40x = 81,779.40 × 19,468.20
  4. Step 4: Simplify right side
    54,503.40x = 1,592,097,715.08
  5. Step 5: Solve for x
    x = 1,592,097,715.08/54,503.40
  6. Step 6: Final answer
    x = 29,210.98

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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.