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Finding the Fourth Proportional to 65,740.50, 90,721.89 and 37,462.59

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Solution

The fourth proportional to 65,740.50, 90,721.89 and 37,462.59 is: 51,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,740.50 : 90,721.89 = 37,462.59 : x
  2. Step 2: Convert to fraction form
    65,740.50/90,721.89 = 37,462.59/x
  3. Step 3: Cross multiply
    65,740.50x = 90,721.89 × 37,462.59
  4. Step 4: Simplify right side
    65,740.50x = 3,398,676,969.10
  5. Step 5: Solve for x
    x = 3,398,676,969.10/65,740.50
  6. Step 6: Final answer
    x = 51,698.37

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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.