Home / 81,440.84-112,392.96-45,642.39

Finding the Fourth Proportional to 81,440.84, 112,392.96 and 45,642.39

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Solution

The fourth proportional to 81,440.84, 112,392.96 and 45,642.39 is: 62,989.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.84 : 112,392.96 = 45,642.39 : x
  2. Step 2: Convert to fraction form
    81,440.84/112,392.96 = 45,642.39/x
  3. Step 3: Cross multiply
    81,440.84x = 112,392.96 × 45,642.39
  4. Step 4: Simplify right side
    81,440.84x = 5,129,882,720.94
  5. Step 5: Solve for x
    x = 5,129,882,720.94/81,440.84
  6. Step 6: Final answer
    x = 62,989.07

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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.