Home / 72,661.92-108,946.08-30,569.28

Finding the Fourth Proportional to 72,661.92, 108,946.08 and 30,569.28

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Solution

The fourth proportional to 72,661.92, 108,946.08 and 30,569.28 is: 45,834.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,661.92 : 108,946.08 = 30,569.28 : x
  2. Step 2: Convert to fraction form
    72,661.92/108,946.08 = 30,569.28/x
  3. Step 3: Cross multiply
    72,661.92x = 108,946.08 × 30,569.28
  4. Step 4: Simplify right side
    72,661.92x = 3,330,403,224.42
  5. Step 5: Solve for x
    x = 3,330,403,224.42/72,661.92
  6. Step 6: Final answer
    x = 45,834.23

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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.