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Finding the Fourth Proportional to 38,489, 57,435.65 and 34,341.80

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Solution

The fourth proportional to 38,489, 57,435.65 and 34,341.80 is: 51,246.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,489 : 57,435.65 = 34,341.80 : x
  2. Step 2: Convert to fraction form
    38,489/57,435.65 = 34,341.80/x
  3. Step 3: Cross multiply
    38,489x = 57,435.65 × 34,341.80
  4. Step 4: Simplify right side
    38,489x = 1,972,443,605.17
  5. Step 5: Solve for x
    x = 1,972,443,605.17/38,489
  6. Step 6: Final answer
    x = 51,246.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.