Home / 39,871,828.82-55,023,115.29-21,537,114.50

Finding the Fourth Proportional to 39,871,828.82, 55,023,115.29 and 21,537,114.50

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Solution

The fourth proportional to 39,871,828.82, 55,023,115.29 and 21,537,114.50 is: 29,721,213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871,828.82 : 55,023,115.29 = 21,537,114.50 : x
  2. Step 2: Convert to fraction form
    39,871,828.82/55,023,115.29 = 21,537,114.50/x
  3. Step 3: Cross multiply
    39,871,828.82x = 55,023,115.29 × 21,537,114.50
  4. Step 4: Simplify right side
    39,871,828.82x = 1,185,039,134,147,430.75
  5. Step 5: Solve for x
    x = 1,185,039,134,147,430.75/39,871,828.82
  6. Step 6: Final answer
    x = 29,721,213.43

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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.