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Finding the Fourth Proportional to 64,691.55, 89,284.91 and 37,828.80

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Solution

The fourth proportional to 64,691.55, 89,284.91 and 37,828.80 is: 52,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,691.55 : 89,284.91 = 37,828.80 : x
  2. Step 2: Convert to fraction form
    64,691.55/89,284.91 = 37,828.80/x
  3. Step 3: Cross multiply
    64,691.55x = 89,284.91 × 37,828.80
  4. Step 4: Simplify right side
    64,691.55x = 3,377,540,814.26
  5. Step 5: Solve for x
    x = 3,377,540,814.26/64,691.55
  6. Step 6: Final answer
    x = 52,209.92

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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.