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Finding the Fourth Proportional to 64,879.16, 89,531.80 and 36,585.84

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Solution

The fourth proportional to 64,879.16, 89,531.80 and 36,585.84 is: 50,487.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,879.16 : 89,531.80 = 36,585.84 : x
  2. Step 2: Convert to fraction form
    64,879.16/89,531.80 = 36,585.84/x
  3. Step 3: Cross multiply
    64,879.16x = 89,531.80 × 36,585.84
  4. Step 4: Simplify right side
    64,879.16x = 3,275,596,109.71
  5. Step 5: Solve for x
    x = 3,275,596,109.71/64,879.16
  6. Step 6: Final answer
    x = 50,487.65

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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.