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Finding the Fourth Proportional to 74,755.42, 112,133.12 and 51,310.78

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Solution

The fourth proportional to 74,755.42, 112,133.12 and 51,310.78 is: 76,966.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,755.42 : 112,133.12 = 51,310.78 : x
  2. Step 2: Convert to fraction form
    74,755.42/112,133.12 = 51,310.78/x
  3. Step 3: Cross multiply
    74,755.42x = 112,133.12 × 51,310.78
  4. Step 4: Simplify right side
    74,755.42x = 5,753,637,033.81
  5. Step 5: Solve for x
    x = 5,753,637,033.81/74,755.42
  6. Step 6: Final answer
    x = 76,966.16

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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.