Home / 72,275.12-108,434.04-30,725.36

Finding the Fourth Proportional to 72,275.12, 108,434.04 and 30,725.36

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Solution

The fourth proportional to 72,275.12, 108,434.04 and 30,725.36 is: 46,097.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,275.12 : 108,434.04 = 30,725.36 : x
  2. Step 2: Convert to fraction form
    72,275.12/108,434.04 = 30,725.36/x
  3. Step 3: Cross multiply
    72,275.12x = 108,434.04 × 30,725.36
  4. Step 4: Simplify right side
    72,275.12x = 3,331,674,915.25
  5. Step 5: Solve for x
    x = 3,331,674,915.25/72,275.12
  6. Step 6: Final answer
    x = 46,097.12

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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.