Home / 72,439,349.16-108,647,212.06-21,309,410.28

Finding the Fourth Proportional to 72,439,349.16, 108,647,212.06 and 21,309,410.28

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Solution

The fourth proportional to 72,439,349.16, 108,647,212.06 and 21,309,410.28 is: 31,960,640.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439,349.16 : 108,647,212.06 = 21,309,410.28 : x
  2. Step 2: Convert to fraction form
    72,439,349.16/108,647,212.06 = 21,309,410.28/x
  3. Step 3: Cross multiply
    72,439,349.16x = 108,647,212.06 × 21,309,410.28
  4. Step 4: Simplify right side
    72,439,349.16x = 2,315,208,017,564,704
  5. Step 5: Solve for x
    x = 2,315,208,017,564,704/72,439,349.16
  6. Step 6: Final answer
    x = 31,960,640.79

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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.