Home / 85,651.22-128,485.38-29,483.90

Finding the Fourth Proportional to 85,651.22, 128,485.38 and 29,483.90

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Solution

The fourth proportional to 85,651.22, 128,485.38 and 29,483.90 is: 44,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,651.22 : 128,485.38 = 29,483.90 : x
  2. Step 2: Convert to fraction form
    85,651.22/128,485.38 = 29,483.90/x
  3. Step 3: Cross multiply
    85,651.22x = 128,485.38 × 29,483.90
  4. Step 4: Simplify right side
    85,651.22x = 3,788,249,452.96
  5. Step 5: Solve for x
    x = 3,788,249,452.96/85,651.22
  6. Step 6: Final answer
    x = 44,228.79

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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.