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Finding the Fourth Proportional to 61,290.56, 84,590.20 and 37,431.20

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Solution

The fourth proportional to 61,290.56, 84,590.20 and 37,431.20 is: 51,660.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,290.56 : 84,590.20 = 37,431.20 : x
  2. Step 2: Convert to fraction form
    61,290.56/84,590.20 = 37,431.20/x
  3. Step 3: Cross multiply
    61,290.56x = 84,590.20 × 37,431.20
  4. Step 4: Simplify right side
    61,290.56x = 3,166,312,694.24
  5. Step 5: Solve for x
    x = 3,166,312,694.24/61,290.56
  6. Step 6: Final answer
    x = 51,660.69

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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.