Home / 105,519.84-145,611.61-57,763.95

Finding the Fourth Proportional to 105,519.84, 145,611.61 and 57,763.95

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Solution

The fourth proportional to 105,519.84, 145,611.61 and 57,763.95 is: 79,711.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,519.84 : 145,611.61 = 57,763.95 : x
  2. Step 2: Convert to fraction form
    105,519.84/145,611.61 = 57,763.95/x
  3. Step 3: Cross multiply
    105,519.84x = 145,611.61 × 57,763.95
  4. Step 4: Simplify right side
    105,519.84x = 8,411,101,759.46
  5. Step 5: Solve for x
    x = 8,411,101,759.46/105,519.84
  6. Step 6: Final answer
    x = 79,711.09

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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.