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Finding the Fourth Proportional to 61,370.92, 84,663.30 and 38,699.56

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Solution

The fourth proportional to 61,370.92, 84,663.30 and 38,699.56 is: 53,387.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,370.92 : 84,663.30 = 38,699.56 : x
  2. Step 2: Convert to fraction form
    61,370.92/84,663.30 = 38,699.56/x
  3. Step 3: Cross multiply
    61,370.92x = 84,663.30 × 38,699.56
  4. Step 4: Simplify right side
    61,370.92x = 3,276,432,458.15
  5. Step 5: Solve for x
    x = 3,276,432,458.15/61,370.92
  6. Step 6: Final answer
    x = 53,387.38

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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.