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Finding the Fourth Proportional to 66,456.84, 92,106.36 and 65,212.68

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Solution

The fourth proportional to 66,456.84, 92,106.36 and 65,212.68 is: 90,382.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,456.84 : 92,106.36 = 65,212.68 : x
  2. Step 2: Convert to fraction form
    66,456.84/92,106.36 = 65,212.68/x
  3. Step 3: Cross multiply
    66,456.84x = 92,106.36 × 65,212.68
  4. Step 4: Simplify right side
    66,456.84x = 6,006,502,580.64
  5. Step 5: Solve for x
    x = 6,006,502,580.64/66,456.84
  6. Step 6: Final answer
    x = 90,382.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.