Home / 54,519.40-81,779.10-45,771.40

Finding the Fourth Proportional to 54,519.40, 81,779.10 and 45,771.40

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Solution

The fourth proportional to 54,519.40, 81,779.10 and 45,771.40 is: 68,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,519.40 : 81,779.10 = 45,771.40 : x
  2. Step 2: Convert to fraction form
    54,519.40/81,779.10 = 45,771.40/x
  3. Step 3: Cross multiply
    54,519.40x = 81,779.10 × 45,771.40
  4. Step 4: Simplify right side
    54,519.40x = 3,743,143,897.74
  5. Step 5: Solve for x
    x = 3,743,143,897.74/54,519.40
  6. Step 6: Final answer
    x = 68,657.10

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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.