Home / 39,870,747.19-55,021,653.20-21,536,032.69

Finding the Fourth Proportional to 39,870,747.19, 55,021,653.20 and 21,536,032.69

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Solution

The fourth proportional to 39,870,747.19, 55,021,653.20 and 21,536,032.69 is: 29,719,737.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870,747.19 : 55,021,653.20 = 21,536,032.69 : x
  2. Step 2: Convert to fraction form
    39,870,747.19/55,021,653.20 = 21,536,032.69/x
  3. Step 3: Cross multiply
    39,870,747.19x = 55,021,653.20 × 21,536,032.69
  4. Step 4: Simplify right side
    39,870,747.19x = 1,184,948,121,727,808.75
  5. Step 5: Solve for x
    x = 1,184,948,121,727,808.75/39,870,747.19
  6. Step 6: Final answer
    x = 29,719,737.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.