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Finding the Fourth Proportional to 65,590.20, 98,458.20 and 40,658.40

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Solution

The fourth proportional to 65,590.20, 98,458.20 and 40,658.40 is: 61,032.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,590.20 : 98,458.20 = 40,658.40 : x
  2. Step 2: Convert to fraction form
    65,590.20/98,458.20 = 40,658.40/x
  3. Step 3: Cross multiply
    65,590.20x = 98,458.20 × 40,658.40
  4. Step 4: Simplify right side
    65,590.20x = 4,003,152,878.88
  5. Step 5: Solve for x
    x = 4,003,152,878.88/65,590.20
  6. Step 6: Final answer
    x = 61,032.79

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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.