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Finding the Fourth Proportional to 65,783.07, 90,789.51 and 37,108.62

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Solution

The fourth proportional to 65,783.07, 90,789.51 and 37,108.62 is: 51,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,783.07 : 90,789.51 = 37,108.62 : x
  2. Step 2: Convert to fraction form
    65,783.07/90,789.51 = 37,108.62/x
  3. Step 3: Cross multiply
    65,783.07x = 90,789.51 × 37,108.62
  4. Step 4: Simplify right side
    65,783.07x = 3,369,073,426.58
  5. Step 5: Solve for x
    x = 3,369,073,426.58/65,783.07
  6. Step 6: Final answer
    x = 51,214.90

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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.