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Finding the Fourth Proportional to 61,688.70, 85,130.31 and 33,394.38

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Solution

The fourth proportional to 61,688.70, 85,130.31 and 33,394.38 is: 46,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,688.70 : 85,130.31 = 33,394.38 : x
  2. Step 2: Convert to fraction form
    61,688.70/85,130.31 = 33,394.38/x
  3. Step 3: Cross multiply
    61,688.70x = 85,130.31 × 33,394.38
  4. Step 4: Simplify right side
    61,688.70x = 2,842,873,921.66
  5. Step 5: Solve for x
    x = 2,842,873,921.66/61,688.70
  6. Step 6: Final answer
    x = 46,084.19

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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.