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Finding the Fourth Proportional to 64,701.76, 89,289.78 and 36,407.44

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Solution

The fourth proportional to 64,701.76, 89,289.78 and 36,407.44 is: 50,243.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,701.76 : 89,289.78 = 36,407.44 : x
  2. Step 2: Convert to fraction form
    64,701.76/89,289.78 = 36,407.44/x
  3. Step 3: Cross multiply
    64,701.76x = 89,289.78 × 36,407.44
  4. Step 4: Simplify right side
    64,701.76x = 3,250,812,307.96
  5. Step 5: Solve for x
    x = 3,250,812,307.96/64,701.76
  6. Step 6: Final answer
    x = 50,243.03

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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.