Home / 81,918.02-113,055.39-50,108.10

Finding the Fourth Proportional to 81,918.02, 113,055.39 and 50,108.10

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Solution

The fourth proportional to 81,918.02, 113,055.39 and 50,108.10 is: 69,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,918.02 : 113,055.39 = 50,108.10 : x
  2. Step 2: Convert to fraction form
    81,918.02/113,055.39 = 50,108.10/x
  3. Step 3: Cross multiply
    81,918.02x = 113,055.39 × 50,108.10
  4. Step 4: Simplify right side
    81,918.02x = 5,664,990,787.66
  5. Step 5: Solve for x
    x = 5,664,990,787.66/81,918.02
  6. Step 6: Final answer
    x = 69,154.40

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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.