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Finding the Fourth Proportional to 66,533.31, 91,831.40 and 43,876.40

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Solution

The fourth proportional to 66,533.31, 91,831.40 and 43,876.40 is: 60,559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,533.31 : 91,831.40 = 43,876.40 : x
  2. Step 2: Convert to fraction form
    66,533.31/91,831.40 = 43,876.40/x
  3. Step 3: Cross multiply
    66,533.31x = 91,831.40 × 43,876.40
  4. Step 4: Simplify right side
    66,533.31x = 4,029,230,790.00
  5. Step 5: Solve for x
    x = 4,029,230,790.00/66,533.31
  6. Step 6: Final answer
    x = 60,559.60

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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.