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Finding the Fourth Proportional to 65,789.76, 90,784 and 37,111.52

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Solution

The fourth proportional to 65,789.76, 90,784 and 37,111.52 is: 51,210.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,789.76 : 90,784 = 37,111.52 : x
  2. Step 2: Convert to fraction form
    65,789.76/90,784 = 37,111.52/x
  3. Step 3: Cross multiply
    65,789.76x = 90,784 × 37,111.52
  4. Step 4: Simplify right side
    65,789.76x = 3,369,132,231.68
  5. Step 5: Solve for x
    x = 3,369,132,231.68/65,789.76
  6. Step 6: Final answer
    x = 51,210.59

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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.