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Finding the Fourth Proportional to 74,629.40, 112,073.70 and 39,637.40

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Solution

The fourth proportional to 74,629.40, 112,073.70 and 39,637.40 is: 59,524.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,629.40 : 112,073.70 = 39,637.40 : x
  2. Step 2: Convert to fraction form
    74,629.40/112,073.70 = 39,637.40/x
  3. Step 3: Cross multiply
    74,629.40x = 112,073.70 × 39,637.40
  4. Step 4: Simplify right side
    74,629.40x = 4,442,310,076.38
  5. Step 5: Solve for x
    x = 4,442,310,076.38/74,629.40
  6. Step 6: Final answer
    x = 59,524.93

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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.