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Finding the Fourth Proportional to 85,335.97, 128,002.64 and 37,938.62

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Solution

The fourth proportional to 85,335.97, 128,002.64 and 37,938.62 is: 56,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,335.97 : 128,002.64 = 37,938.62 : x
  2. Step 2: Convert to fraction form
    85,335.97/128,002.64 = 37,938.62/x
  3. Step 3: Cross multiply
    85,335.97x = 128,002.64 × 37,938.62
  4. Step 4: Simplify right side
    85,335.97x = 4,856,243,517.96
  5. Step 5: Solve for x
    x = 4,856,243,517.96/85,335.97
  6. Step 6: Final answer
    x = 56,907.35

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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.