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Finding the Fourth Proportional to 61,801.45, 85,287.80 and 34,943.38

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Solution

The fourth proportional to 61,801.45, 85,287.80 and 34,943.38 is: 48,222.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,801.45 : 85,287.80 = 34,943.38 : x
  2. Step 2: Convert to fraction form
    61,801.45/85,287.80 = 34,943.38/x
  3. Step 3: Cross multiply
    61,801.45x = 85,287.80 × 34,943.38
  4. Step 4: Simplify right side
    61,801.45x = 2,980,243,830.05
  5. Step 5: Solve for x
    x = 2,980,243,830.05/61,801.45
  6. Step 6: Final answer
    x = 48,222.88

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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.