Home / 66,385.08-91,521.84-64,321.20

Finding the Fourth Proportional to 66,385.08, 91,521.84 and 64,321.20

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Solution

The fourth proportional to 66,385.08, 91,521.84 and 64,321.20 is: 88,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,385.08 : 91,521.84 = 64,321.20 : x
  2. Step 2: Convert to fraction form
    66,385.08/91,521.84 = 64,321.20/x
  3. Step 3: Cross multiply
    66,385.08x = 91,521.84 × 64,321.20
  4. Step 4: Simplify right side
    66,385.08x = 5,886,794,575.01
  5. Step 5: Solve for x
    x = 5,886,794,575.01/66,385.08
  6. Step 6: Final answer
    x = 88,676.47

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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.