Home / 81,087.66-111,899.93-45,278.28

Finding the Fourth Proportional to 81,087.66, 111,899.93 and 45,278.28

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Solution

The fourth proportional to 81,087.66, 111,899.93 and 45,278.28 is: 62,483.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,087.66 : 111,899.93 = 45,278.28 : x
  2. Step 2: Convert to fraction form
    81,087.66/111,899.93 = 45,278.28/x
  3. Step 3: Cross multiply
    81,087.66x = 111,899.93 × 45,278.28
  4. Step 4: Simplify right side
    81,087.66x = 5,066,636,136.13
  5. Step 5: Solve for x
    x = 5,066,636,136.13/81,087.66
  6. Step 6: Final answer
    x = 62,483.44

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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.