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Finding the Fourth Proportional to 74,617.79, 103,036.55 and 72,204.90

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Solution

The fourth proportional to 74,617.79, 103,036.55 and 72,204.90 is: 99,704.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,617.79 : 103,036.55 = 72,204.90 : x
  2. Step 2: Convert to fraction form
    74,617.79/103,036.55 = 72,204.90/x
  3. Step 3: Cross multiply
    74,617.79x = 103,036.55 × 72,204.90
  4. Step 4: Simplify right side
    74,617.79x = 7,439,743,396.12
  5. Step 5: Solve for x
    x = 7,439,743,396.12/74,617.79
  6. Step 6: Final answer
    x = 99,704.69

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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.