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Finding the Fourth Proportional to 66,510.22, 91,784.64 and 36,295.78

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Solution

The fourth proportional to 66,510.22, 91,784.64 and 36,295.78 is: 50,088.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.22 : 91,784.64 = 36,295.78 : x
  2. Step 2: Convert to fraction form
    66,510.22/91,784.64 = 36,295.78/x
  3. Step 3: Cross multiply
    66,510.22x = 91,784.64 × 36,295.78
  4. Step 4: Simplify right side
    66,510.22x = 3,331,395,100.82
  5. Step 5: Solve for x
    x = 3,331,395,100.82/66,510.22
  6. Step 6: Final answer
    x = 50,088.47

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1.5x scale

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.