Home / 78,727.76-108,683.08-54,547.06

Finding the Fourth Proportional to 78,727.76, 108,683.08 and 54,547.06

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Solution

The fourth proportional to 78,727.76, 108,683.08 and 54,547.06 is: 75,301.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727.76 : 108,683.08 = 54,547.06 : x
  2. Step 2: Convert to fraction form
    78,727.76/108,683.08 = 54,547.06/x
  3. Step 3: Cross multiply
    78,727.76x = 108,683.08 × 54,547.06
  4. Step 4: Simplify right side
    78,727.76x = 5,928,342,485.74
  5. Step 5: Solve for x
    x = 5,928,342,485.74/78,727.76
  6. Step 6: Final answer
    x = 75,301.81

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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.