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Finding the Fourth Proportional to 66,792.32, 100,157.33 and 38,720.41

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Solution

The fourth proportional to 66,792.32, 100,157.33 and 38,720.41 is: 58,062.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,792.32 : 100,157.33 = 38,720.41 : x
  2. Step 2: Convert to fraction form
    66,792.32/100,157.33 = 38,720.41/x
  3. Step 3: Cross multiply
    66,792.32x = 100,157.33 × 38,720.41
  4. Step 4: Simplify right side
    66,792.32x = 3,878,132,728.51
  5. Step 5: Solve for x
    x = 3,878,132,728.51/66,792.32
  6. Step 6: Final answer
    x = 58,062.56

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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.