Home / 81,581.90-112,582.32-45,771.14

Finding the Fourth Proportional to 81,581.90, 112,582.32 and 45,771.14

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Solution

The fourth proportional to 81,581.90, 112,582.32 and 45,771.14 is: 63,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,581.90 : 112,582.32 = 45,771.14 : x
  2. Step 2: Convert to fraction form
    81,581.90/112,582.32 = 45,771.14/x
  3. Step 3: Cross multiply
    81,581.90x = 112,582.32 × 45,771.14
  4. Step 4: Simplify right side
    81,581.90x = 5,153,021,130.24
  5. Step 5: Solve for x
    x = 5,153,021,130.24/81,581.90
  6. Step 6: Final answer
    x = 63,163.78

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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.