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Finding the Fourth Proportional to 65,695.19, 90,660.02 and 37,402.70

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Solution

The fourth proportional to 65,695.19, 90,660.02 and 37,402.70 is: 51,616.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,695.19 : 90,660.02 = 37,402.70 : x
  2. Step 2: Convert to fraction form
    65,695.19/90,660.02 = 37,402.70/x
  3. Step 3: Cross multiply
    65,695.19x = 90,660.02 × 37,402.70
  4. Step 4: Simplify right side
    65,695.19x = 3,390,928,889.74
  5. Step 5: Solve for x
    x = 3,390,928,889.74/65,695.19
  6. Step 6: Final answer
    x = 51,616.09

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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.