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Finding the Fourth Proportional to 64,270.40, 96,428.71 and 28,728.76

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Solution

The fourth proportional to 64,270.40, 96,428.71 and 28,728.76 is: 43,103.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,270.40 : 96,428.71 = 28,728.76 : x
  2. Step 2: Convert to fraction form
    64,270.40/96,428.71 = 28,728.76/x
  3. Step 3: Cross multiply
    64,270.40x = 96,428.71 × 28,728.76
  4. Step 4: Simplify right side
    64,270.40x = 2,770,277,266.70
  5. Step 5: Solve for x
    x = 2,770,277,266.70/64,270.40
  6. Step 6: Final answer
    x = 43,103.47

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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.