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Finding the Fourth Proportional to 66,187.92, 91,339.93 and 35,973.32

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Solution

The fourth proportional to 66,187.92, 91,339.93 and 35,973.32 is: 49,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,187.92 : 91,339.93 = 35,973.32 : x
  2. Step 2: Convert to fraction form
    66,187.92/91,339.93 = 35,973.32/x
  3. Step 3: Cross multiply
    66,187.92x = 91,339.93 × 35,973.32
  4. Step 4: Simplify right side
    66,187.92x = 3,285,799,894.10
  5. Step 5: Solve for x
    x = 3,285,799,894.10/66,187.92
  6. Step 6: Final answer
    x = 49,643.50

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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.