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Finding the Fourth Proportional to 66,365.30, 91,602.93 and 43,720.82

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Solution

The fourth proportional to 66,365.30, 91,602.93 and 43,720.82 is: 60,347.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,365.30 : 91,602.93 = 43,720.82 : x
  2. Step 2: Convert to fraction form
    66,365.30/91,602.93 = 43,720.82/x
  3. Step 3: Cross multiply
    66,365.30x = 91,602.93 × 43,720.82
  4. Step 4: Simplify right side
    66,365.30x = 4,004,955,214.00
  5. Step 5: Solve for x
    x = 4,004,955,214.00/66,365.30
  6. Step 6: Final answer
    x = 60,347.13

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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.