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Finding the Fourth Proportional to 61,678.67, 85,118.23 and 37,471.40

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Solution

The fourth proportional to 61,678.67, 85,118.23 and 37,471.40 is: 51,711.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,678.67 : 85,118.23 = 37,471.40 : x
  2. Step 2: Convert to fraction form
    61,678.67/85,118.23 = 37,471.40/x
  3. Step 3: Cross multiply
    61,678.67x = 85,118.23 × 37,471.40
  4. Step 4: Simplify right side
    61,678.67x = 3,189,498,818.03
  5. Step 5: Solve for x
    x = 3,189,498,818.03/61,678.67
  6. Step 6: Final answer
    x = 51,711.54

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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.