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Finding the Fourth Proportional to 64,726.56, 89,328 and 36,051.72

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Solution

The fourth proportional to 64,726.56, 89,328 and 36,051.72 is: 49,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,726.56 : 89,328 = 36,051.72 : x
  2. Step 2: Convert to fraction form
    64,726.56/89,328 = 36,051.72/x
  3. Step 3: Cross multiply
    64,726.56x = 89,328 × 36,051.72
  4. Step 4: Simplify right side
    64,726.56x = 3,220,428,044.16
  5. Step 5: Solve for x
    x = 3,220,428,044.16/64,726.56
  6. Step 6: Final answer
    x = 49,754.35

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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.