Home / 85,452.08-128,074.23-60,499.32

Finding the Fourth Proportional to 85,452.08, 128,074.23 and 60,499.32

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Solution

The fourth proportional to 85,452.08, 128,074.23 and 60,499.32 is: 90,675.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,452.08 : 128,074.23 = 60,499.32 : x
  2. Step 2: Convert to fraction form
    85,452.08/128,074.23 = 60,499.32/x
  3. Step 3: Cross multiply
    85,452.08x = 128,074.23 × 60,499.32
  4. Step 4: Simplify right side
    85,452.08x = 7,748,403,344.25
  5. Step 5: Solve for x
    x = 7,748,403,344.25/85,452.08
  6. Step 6: Final answer
    x = 90,675.43

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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.