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Finding the Fourth Proportional to 74,906.64, 103,370.48 and 40,915.12

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Solution

The fourth proportional to 74,906.64, 103,370.48 and 40,915.12 is: 56,462.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,906.64 : 103,370.48 = 40,915.12 : x
  2. Step 2: Convert to fraction form
    74,906.64/103,370.48 = 40,915.12/x
  3. Step 3: Cross multiply
    74,906.64x = 103,370.48 × 40,915.12
  4. Step 4: Simplify right side
    74,906.64x = 4,229,415,689.89
  5. Step 5: Solve for x
    x = 4,229,415,689.89/74,906.64
  6. Step 6: Final answer
    x = 56,462.49

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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.