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Finding the Fourth Proportional to 64,718.51, 89,290.69 and 36,418.73

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Solution

The fourth proportional to 64,718.51, 89,290.69 and 36,418.73 is: 50,246.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,718.51 : 89,290.69 = 36,418.73 : x
  2. Step 2: Convert to fraction form
    64,718.51/89,290.69 = 36,418.73/x
  3. Step 3: Cross multiply
    64,718.51x = 89,290.69 × 36,418.73
  4. Step 4: Simplify right side
    64,718.51x = 3,251,852,993.12
  5. Step 5: Solve for x
    x = 3,251,852,993.12/64,718.51
  6. Step 6: Final answer
    x = 50,246.11

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1.5x scale

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.