Home / 39,872,126.75-55,023,557.06-21,537,412.43

Finding the Fourth Proportional to 39,872,126.75, 55,023,557.06 and 21,537,412.43

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Solution

The fourth proportional to 39,872,126.75, 55,023,557.06 and 21,537,412.43 is: 29,721,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872,126.75 : 55,023,557.06 = 21,537,412.43 : x
  2. Step 2: Convert to fraction form
    39,872,126.75/55,023,557.06 = 21,537,412.43/x
  3. Step 3: Cross multiply
    39,872,126.75x = 55,023,557.06 × 21,537,412.43
  4. Step 4: Simplify right side
    39,872,126.75x = 1,185,065,041,659,171.25
  5. Step 5: Solve for x
    x = 1,185,065,041,659,171.25/39,872,126.75
  6. Step 6: Final answer
    x = 29,721,641.11

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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.