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Finding the Fourth Proportional to 66,265.94, 91,502.19 and 61,457.89

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Solution

The fourth proportional to 66,265.94, 91,502.19 and 61,457.89 is: 84,863.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,265.94 : 91,502.19 = 61,457.89 : x
  2. Step 2: Convert to fraction form
    66,265.94/91,502.19 = 61,457.89/x
  3. Step 3: Cross multiply
    66,265.94x = 91,502.19 × 61,457.89
  4. Step 4: Simplify right side
    66,265.94x = 5,623,531,527.78
  5. Step 5: Solve for x
    x = 5,623,531,527.78/66,265.94
  6. Step 6: Final answer
    x = 84,863.08

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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.