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Finding the Fourth Proportional to 66,422.90, 99,661.05 and 26,983.10

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Solution

The fourth proportional to 66,422.90, 99,661.05 and 26,983.10 is: 40,485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.90 : 99,661.05 = 26,983.10 : x
  2. Step 2: Convert to fraction form
    66,422.90/99,661.05 = 26,983.10/x
  3. Step 3: Cross multiply
    66,422.90x = 99,661.05 × 26,983.10
  4. Step 4: Simplify right side
    66,422.90x = 2,689,164,078.26
  5. Step 5: Solve for x
    x = 2,689,164,078.26/66,422.90
  6. Step 6: Final answer
    x = 40,485.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.