Home / 81,118.08-111,941.78-45,308.60

Finding the Fourth Proportional to 81,118.08, 111,941.78 and 45,308.60

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Solution

The fourth proportional to 81,118.08, 111,941.78 and 45,308.60 is: 62,525.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,118.08 : 111,941.78 = 45,308.60 : x
  2. Step 2: Convert to fraction form
    81,118.08/111,941.78 = 45,308.60/x
  3. Step 3: Cross multiply
    81,118.08x = 111,941.78 × 45,308.60
  4. Step 4: Simplify right side
    81,118.08x = 5,071,925,333.31
  5. Step 5: Solve for x
    x = 5,071,925,333.31/81,118.08
  6. Step 6: Final answer
    x = 62,525.21

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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.