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Finding the Fourth Proportional to 64,956.32, 89,630.08 and 39,449.38

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Solution

The fourth proportional to 64,956.32, 89,630.08 and 39,449.38 is: 54,434.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,956.32 : 89,630.08 = 39,449.38 : x
  2. Step 2: Convert to fraction form
    64,956.32/89,630.08 = 39,449.38/x
  3. Step 3: Cross multiply
    64,956.32x = 89,630.08 × 39,449.38
  4. Step 4: Simplify right side
    64,956.32x = 3,535,851,085.35
  5. Step 5: Solve for x
    x = 3,535,851,085.35/64,956.32
  6. Step 6: Final answer
    x = 54,434.29

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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.