Home / 66,421.08-91,650.60-39,562.92

Finding the Fourth Proportional to 66,421.08, 91,650.60 and 39,562.92

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Solution

The fourth proportional to 66,421.08, 91,650.60 and 39,562.92 is: 54,590.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.08 : 91,650.60 = 39,562.92 : x
  2. Step 2: Convert to fraction form
    66,421.08/91,650.60 = 39,562.92/x
  3. Step 3: Cross multiply
    66,421.08x = 91,650.60 × 39,562.92
  4. Step 4: Simplify right side
    66,421.08x = 3,625,965,355.75
  5. Step 5: Solve for x
    x = 3,625,965,355.75/66,421.08
  6. Step 6: Final answer
    x = 54,590.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.