Home / 39,975,886.72-55,166,742.26-21,641,172.22

Finding the Fourth Proportional to 39,975,886.72, 55,166,742.26 and 21,641,172.22

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Solution

The fourth proportional to 39,975,886.72, 55,166,742.26 and 21,641,172.22 is: 29,864,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,975,886.72 : 55,166,742.26 = 21,641,172.22 : x
  2. Step 2: Convert to fraction form
    39,975,886.72/55,166,742.26 = 21,641,172.22/x
  3. Step 3: Cross multiply
    39,975,886.72x = 55,166,742.26 × 21,641,172.22
  4. Step 4: Simplify right side
    39,975,886.72x = 1,193,872,970,065,012
  5. Step 5: Solve for x
    x = 1,193,872,970,065,012/39,975,886.72
  6. Step 6: Final answer
    x = 29,864,827.73

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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.