Home / 87,381.12-120,598.88-53,409.18

Finding the Fourth Proportional to 87,381.12, 120,598.88 and 53,409.18

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Solution

The fourth proportional to 87,381.12, 120,598.88 and 53,409.18 is: 73,712.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,381.12 : 120,598.88 = 53,409.18 : x
  2. Step 2: Convert to fraction form
    87,381.12/120,598.88 = 53,409.18/x
  3. Step 3: Cross multiply
    87,381.12x = 120,598.88 × 53,409.18
  4. Step 4: Simplify right side
    87,381.12x = 6,441,086,820.25
  5. Step 5: Solve for x
    x = 6,441,086,820.25/87,381.12
  6. Step 6: Final answer
    x = 73,712.57

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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.