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Finding the Fourth Proportional to 64,778.64, 89,394.63 and 37,926.42

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Solution

The fourth proportional to 64,778.64, 89,394.63 and 37,926.42 is: 52,338.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,778.64 : 89,394.63 = 37,926.42 : x
  2. Step 2: Convert to fraction form
    64,778.64/89,394.63 = 37,926.42/x
  3. Step 3: Cross multiply
    64,778.64x = 89,394.63 × 37,926.42
  4. Step 4: Simplify right side
    64,778.64x = 3,390,418,283.12
  5. Step 5: Solve for x
    x = 3,390,418,283.12/64,778.64
  6. Step 6: Final answer
    x = 52,338.52

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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.