Home / 81,242.30-112,106.76-45,431.12

Finding the Fourth Proportional to 81,242.30, 112,106.76 and 45,431.12

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Solution

The fourth proportional to 81,242.30, 112,106.76 and 45,431.12 is: 62,690.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242.30 : 112,106.76 = 45,431.12 : x
  2. Step 2: Convert to fraction form
    81,242.30/112,106.76 = 45,431.12/x
  3. Step 3: Cross multiply
    81,242.30x = 112,106.76 × 45,431.12
  4. Step 4: Simplify right side
    81,242.30x = 5,093,135,666.37
  5. Step 5: Solve for x
    x = 5,093,135,666.37/81,242.30
  6. Step 6: Final answer
    x = 62,690.69

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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.