Home / 65,265.15-90,063.78-38,409.13

Finding the Fourth Proportional to 65,265.15, 90,063.78 and 38,409.13

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Solution

The fourth proportional to 65,265.15, 90,063.78 and 38,409.13 is: 53,003.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,265.15 : 90,063.78 = 38,409.13 : x
  2. Step 2: Convert to fraction form
    65,265.15/90,063.78 = 38,409.13/x
  3. Step 3: Cross multiply
    65,265.15x = 90,063.78 × 38,409.13
  4. Step 4: Simplify right side
    65,265.15x = 3,459,270,983.99
  5. Step 5: Solve for x
    x = 3,459,270,983.99/65,265.15
  6. Step 6: Final answer
    x = 53,003.34

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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.