Home / 65,321.51-90,141.05-38,465.15

Finding the Fourth Proportional to 65,321.51, 90,141.05 and 38,465.15

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Solution

The fourth proportional to 65,321.51, 90,141.05 and 38,465.15 is: 53,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,321.51 : 90,141.05 = 38,465.15 : x
  2. Step 2: Convert to fraction form
    65,321.51/90,141.05 = 38,465.15/x
  3. Step 3: Cross multiply
    65,321.51x = 90,141.05 × 38,465.15
  4. Step 4: Simplify right side
    65,321.51x = 3,467,288,654.87
  5. Step 5: Solve for x
    x = 3,467,288,654.87/65,321.51
  6. Step 6: Final answer
    x = 53,080.35

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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.