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Finding the Fourth Proportional to 66,792.19, 100,157.14 and 38,720.28

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Solution

The fourth proportional to 66,792.19, 100,157.14 and 38,720.28 is: 58,062.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,792.19 : 100,157.14 = 38,720.28 : x
  2. Step 2: Convert to fraction form
    66,792.19/100,157.14 = 38,720.28/x
  3. Step 3: Cross multiply
    66,792.19x = 100,157.14 × 38,720.28
  4. Step 4: Simplify right side
    66,792.19x = 3,878,112,504.80
  5. Step 5: Solve for x
    x = 3,878,112,504.80/66,792.19
  6. Step 6: Final answer
    x = 58,062.36

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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.