Home / 78,212.04-107,904.33-51,369.09

Finding the Fourth Proportional to 78,212.04, 107,904.33 and 51,369.09

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Solution

The fourth proportional to 78,212.04, 107,904.33 and 51,369.09 is: 70,870.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,212.04 : 107,904.33 = 51,369.09 : x
  2. Step 2: Convert to fraction form
    78,212.04/107,904.33 = 51,369.09/x
  3. Step 3: Cross multiply
    78,212.04x = 107,904.33 × 51,369.09
  4. Step 4: Simplify right side
    78,212.04x = 5,542,947,239.16
  5. Step 5: Solve for x
    x = 5,542,947,239.16/78,212.04
  6. Step 6: Final answer
    x = 70,870.77

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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.