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Finding the Fourth Proportional to 65,980.74, 91,053.21 and 35,766.18

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Solution

The fourth proportional to 65,980.74, 91,053.21 and 35,766.18 is: 49,357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,980.74 : 91,053.21 = 35,766.18 : x
  2. Step 2: Convert to fraction form
    65,980.74/91,053.21 = 35,766.18/x
  3. Step 3: Cross multiply
    65,980.74x = 91,053.21 × 35,766.18
  4. Step 4: Simplify right side
    65,980.74x = 3,256,625,498.44
  5. Step 5: Solve for x
    x = 3,256,625,498.44/65,980.74
  6. Step 6: Final answer
    x = 49,357.21

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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.