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Finding the Fourth Proportional to 66,561.66, 91,856.64 and 36,347.19

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Solution

The fourth proportional to 66,561.66, 91,856.64 and 36,347.19 is: 50,159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,561.66 : 91,856.64 = 36,347.19 : x
  2. Step 2: Convert to fraction form
    66,561.66/91,856.64 = 36,347.19/x
  3. Step 3: Cross multiply
    66,561.66x = 91,856.64 × 36,347.19
  4. Step 4: Simplify right side
    66,561.66x = 3,338,730,746.84
  5. Step 5: Solve for x
    x = 3,338,730,746.84/66,561.66
  6. Step 6: Final answer
    x = 50,159.97

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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.