Home / 72,312,066.45-108,468,982.58-21,195,119.43

Finding the Fourth Proportional to 72,312,066.45, 108,468,982.58 and 21,195,119.43

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Solution

The fourth proportional to 72,312,066.45, 108,468,982.58 and 21,195,119.43 is: 31,792,937.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,312,066.45 : 108,468,982.58 = 21,195,119.43 : x
  2. Step 2: Convert to fraction form
    72,312,066.45/108,468,982.58 = 21,195,119.43/x
  3. Step 3: Cross multiply
    72,312,066.45x = 108,468,982.58 × 21,195,119.43
  4. Step 4: Simplify right side
    72,312,066.45x = 2,299,013,040,127,714
  5. Step 5: Solve for x
    x = 2,299,013,040,127,714/72,312,066.45
  6. Step 6: Final answer
    x = 31,792,937.93

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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.