Home / 81,131.64-111,950.53-45,317.08

Finding the Fourth Proportional to 81,131.64, 111,950.53 and 45,317.08

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Solution

The fourth proportional to 81,131.64, 111,950.53 and 45,317.08 is: 62,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,131.64 : 111,950.53 = 45,317.08 : x
  2. Step 2: Convert to fraction form
    81,131.64/111,950.53 = 45,317.08/x
  3. Step 3: Cross multiply
    81,131.64x = 111,950.53 × 45,317.08
  4. Step 4: Simplify right side
    81,131.64x = 5,073,271,124.05
  5. Step 5: Solve for x
    x = 5,073,271,124.05/81,131.64
  6. Step 6: Final answer
    x = 62,531.35

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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.