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Finding the Fourth Proportional to 65,859.40, 90,886.89 and 37,180.68

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Solution

The fourth proportional to 65,859.40, 90,886.89 and 37,180.68 is: 51,309.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,859.40 : 90,886.89 = 37,180.68 : x
  2. Step 2: Convert to fraction form
    65,859.40/90,886.89 = 37,180.68/x
  3. Step 3: Cross multiply
    65,859.40x = 90,886.89 × 37,180.68
  4. Step 4: Simplify right side
    65,859.40x = 3,379,236,373.29
  5. Step 5: Solve for x
    x = 3,379,236,373.29/65,859.40
  6. Step 6: Final answer
    x = 51,309.86

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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.