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Finding the Fourth Proportional to 64,688.95, 89,270.62 and 36,394.66

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Solution

The fourth proportional to 64,688.95, 89,270.62 and 36,394.66 is: 50,224.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,688.95 : 89,270.62 = 36,394.66 : x
  2. Step 2: Convert to fraction form
    64,688.95/89,270.62 = 36,394.66/x
  3. Step 3: Cross multiply
    64,688.95x = 89,270.62 × 36,394.66
  4. Step 4: Simplify right side
    64,688.95x = 3,248,973,862.89
  5. Step 5: Solve for x
    x = 3,248,973,862.89/64,688.95
  6. Step 6: Final answer
    x = 50,224.56

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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.