Home / 103,683.28-155,585.40-43,708.11

Finding the Fourth Proportional to 103,683.28, 155,585.40 and 43,708.11

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Solution

The fourth proportional to 103,683.28, 155,585.40 and 43,708.11 is: 65,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,683.28 : 155,585.40 = 43,708.11 : x
  2. Step 2: Convert to fraction form
    103,683.28/155,585.40 = 43,708.11/x
  3. Step 3: Cross multiply
    103,683.28x = 155,585.40 × 43,708.11
  4. Step 4: Simplify right side
    103,683.28x = 6,800,342,999.67
  5. Step 5: Solve for x
    x = 6,800,342,999.67/103,683.28
  6. Step 6: Final answer
    x = 65,587.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.