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Finding the Fourth Proportional to 40,602.90, 60,904.35 and 30,761.40

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Solution

The fourth proportional to 40,602.90, 60,904.35 and 30,761.40 is: 46,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,602.90 : 60,904.35 = 30,761.40 : x
  2. Step 2: Convert to fraction form
    40,602.90/60,904.35 = 30,761.40/x
  3. Step 3: Cross multiply
    40,602.90x = 60,904.35 × 30,761.40
  4. Step 4: Simplify right side
    40,602.90x = 1,873,503,072.09
  5. Step 5: Solve for x
    x = 1,873,503,072.09/40,602.90
  6. Step 6: Final answer
    x = 46,142.10

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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.