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Finding the Fourth Proportional to 66,455.80, 91,726.47 and 37,792.19

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Solution

The fourth proportional to 66,455.80, 91,726.47 and 37,792.19 is: 52,163.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.80 : 91,726.47 = 37,792.19 : x
  2. Step 2: Convert to fraction form
    66,455.80/91,726.47 = 37,792.19/x
  3. Step 3: Cross multiply
    66,455.80x = 91,726.47 × 37,792.19
  4. Step 4: Simplify right side
    66,455.80x = 3,466,544,411.59
  5. Step 5: Solve for x
    x = 3,466,544,411.59/66,455.80
  6. Step 6: Final answer
    x = 52,163.16

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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.