Home / 77,653.49-107,136.04-63,288.62

Finding the Fourth Proportional to 77,653.49, 107,136.04 and 63,288.62

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Solution

The fourth proportional to 77,653.49, 107,136.04 and 63,288.62 is: 87,317.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,653.49 : 107,136.04 = 63,288.62 : x
  2. Step 2: Convert to fraction form
    77,653.49/107,136.04 = 63,288.62/x
  3. Step 3: Cross multiply
    77,653.49x = 107,136.04 × 63,288.62
  4. Step 4: Simplify right side
    77,653.49x = 6,780,491,426.57
  5. Step 5: Solve for x
    x = 6,780,491,426.57/77,653.49
  6. Step 6: Final answer
    x = 87,317.28

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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.