Home / 82,405.15-113,686.94-53,758.49

Finding the Fourth Proportional to 82,405.15, 113,686.94 and 53,758.49

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Solution

The fourth proportional to 82,405.15, 113,686.94 and 53,758.49 is: 74,165.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,405.15 : 113,686.94 = 53,758.49 : x
  2. Step 2: Convert to fraction form
    82,405.15/113,686.94 = 53,758.49/x
  3. Step 3: Cross multiply
    82,405.15x = 113,686.94 × 53,758.49
  4. Step 4: Simplify right side
    82,405.15x = 6,111,637,793.08
  5. Step 5: Solve for x
    x = 6,111,637,793.08/82,405.15
  6. Step 6: Final answer
    x = 74,165.73

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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.