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Finding the Fourth Proportional to 66,041.82, 91,113.80 and 43,393.01

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Solution

The fourth proportional to 66,041.82, 91,113.80 and 43,393.01 is: 59,866.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,041.82 : 91,113.80 = 43,393.01 : x
  2. Step 2: Convert to fraction form
    66,041.82/91,113.80 = 43,393.01/x
  3. Step 3: Cross multiply
    66,041.82x = 91,113.80 × 43,393.01
  4. Step 4: Simplify right side
    66,041.82x = 3,953,701,817.57
  5. Step 5: Solve for x
    x = 3,953,701,817.57/66,041.82
  6. Step 6: Final answer
    x = 59,866.64

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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.