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Finding the Fourth Proportional to 64,209.69, 88,609.47 and 35,915.38

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Solution

The fourth proportional to 64,209.69, 88,609.47 and 35,915.38 is: 49,563.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,209.69 : 88,609.47 = 35,915.38 : x
  2. Step 2: Convert to fraction form
    64,209.69/88,609.47 = 35,915.38/x
  3. Step 3: Cross multiply
    64,209.69x = 88,609.47 × 35,915.38
  4. Step 4: Simplify right side
    64,209.69x = 3,182,442,786.65
  5. Step 5: Solve for x
    x = 3,182,442,786.65/64,209.69
  6. Step 6: Final answer
    x = 49,563.28

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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.