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Finding the Fourth Proportional to 66,987.90, 100,411.92 and 22,599.36

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Solution

The fourth proportional to 66,987.90, 100,411.92 and 22,599.36 is: 33,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,987.90 : 100,411.92 = 22,599.36 : x
  2. Step 2: Convert to fraction form
    66,987.90/100,411.92 = 22,599.36/x
  3. Step 3: Cross multiply
    66,987.90x = 100,411.92 × 22,599.36
  4. Step 4: Simplify right side
    66,987.90x = 2,269,245,128.37
  5. Step 5: Solve for x
    x = 2,269,245,128.37/66,987.90
  6. Step 6: Final answer
    x = 33,875.45

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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.