Home / 91,720.08-137,535.68-53,779.72

Finding the Fourth Proportional to 91,720.08, 137,535.68 and 53,779.72

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Solution

The fourth proportional to 91,720.08, 137,535.68 and 53,779.72 is: 80,643.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.08 : 137,535.68 = 53,779.72 : x
  2. Step 2: Convert to fraction form
    91,720.08/137,535.68 = 53,779.72/x
  3. Step 3: Cross multiply
    91,720.08x = 137,535.68 × 53,779.72
  4. Step 4: Simplify right side
    91,720.08x = 7,396,630,263.43
  5. Step 5: Solve for x
    x = 7,396,630,263.43/91,720.08
  6. Step 6: Final answer
    x = 80,643.53

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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.