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Finding the Fourth Proportional to 66,185, 91,333.24 and 37,888.80

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Solution

The fourth proportional to 66,185, 91,333.24 and 37,888.80 is: 52,285.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,185 : 91,333.24 = 37,888.80 : x
  2. Step 2: Convert to fraction form
    66,185/91,333.24 = 37,888.80/x
  3. Step 3: Cross multiply
    66,185x = 91,333.24 × 37,888.80
  4. Step 4: Simplify right side
    66,185x = 3,460,506,863.71
  5. Step 5: Solve for x
    x = 3,460,506,863.71/66,185
  6. Step 6: Final answer
    x = 52,285.36

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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.