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Finding the Fourth Proportional to 64,798.16, 89,418.58 and 36,120.95

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Solution

The fourth proportional to 64,798.16, 89,418.58 and 36,120.95 is: 49,845.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,798.16 : 89,418.58 = 36,120.95 : x
  2. Step 2: Convert to fraction form
    64,798.16/89,418.58 = 36,120.95/x
  3. Step 3: Cross multiply
    64,798.16x = 89,418.58 × 36,120.95
  4. Step 4: Simplify right side
    64,798.16x = 3,229,884,561.34
  5. Step 5: Solve for x
    x = 3,229,884,561.34/64,798.16
  6. Step 6: Final answer
    x = 49,845.31

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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.