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Finding the Fourth Proportional to 66,264, 91,444.32 and 36,457.92

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Solution

The fourth proportional to 66,264, 91,444.32 and 36,457.92 is: 50,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,264 : 91,444.32 = 36,457.92 : x
  2. Step 2: Convert to fraction form
    66,264/91,444.32 = 36,457.92/x
  3. Step 3: Cross multiply
    66,264x = 91,444.32 × 36,457.92
  4. Step 4: Simplify right side
    66,264x = 3,333,869,703.01
  5. Step 5: Solve for x
    x = 3,333,869,703.01/66,264
  6. Step 6: Final answer
    x = 50,311.93

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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.