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Finding the Fourth Proportional to 61,431.80, 92,001.90 and 37,812.20

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Solution

The fourth proportional to 61,431.80, 92,001.90 and 37,812.20 is: 56,628.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,431.80 : 92,001.90 = 37,812.20 : x
  2. Step 2: Convert to fraction form
    61,431.80/92,001.90 = 37,812.20/x
  3. Step 3: Cross multiply
    61,431.80x = 92,001.90 × 37,812.20
  4. Step 4: Simplify right side
    61,431.80x = 3,478,794,243.18
  5. Step 5: Solve for x
    x = 3,478,794,243.18/61,431.80
  6. Step 6: Final answer
    x = 56,628.56

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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.