Home / 78,810.19-108,758.07-50,515.94

Finding the Fourth Proportional to 78,810.19, 108,758.07 and 50,515.94

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Solution

The fourth proportional to 78,810.19, 108,758.07 and 50,515.94 is: 69,712.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,810.19 : 108,758.07 = 50,515.94 : x
  2. Step 2: Convert to fraction form
    78,810.19/108,758.07 = 50,515.94/x
  3. Step 3: Cross multiply
    78,810.19x = 108,758.07 × 50,515.94
  4. Step 4: Simplify right side
    78,810.19x = 5,494,016,410.53
  5. Step 5: Solve for x
    x = 5,494,016,410.53/78,810.19
  6. Step 6: Final answer
    x = 69,712.01

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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.