Home / 81,448.20-112,450.95-66,376.89

Finding the Fourth Proportional to 81,448.20, 112,450.95 and 66,376.89

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Solution

The fourth proportional to 81,448.20, 112,450.95 and 66,376.89 is: 91,642.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,448.20 : 112,450.95 = 66,376.89 : x
  2. Step 2: Convert to fraction form
    81,448.20/112,450.95 = 66,376.89/x
  3. Step 3: Cross multiply
    81,448.20x = 112,450.95 × 66,376.89
  4. Step 4: Simplify right side
    81,448.20x = 7,464,144,338.55
  5. Step 5: Solve for x
    x = 7,464,144,338.55/81,448.20
  6. Step 6: Final answer
    x = 91,642.84

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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.