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Finding the Fourth Proportional to 12,950,761, 17,871,580.76 and 7,149,417.88

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Solution

The fourth proportional to 12,950,761, 17,871,580.76 and 7,149,417.88 is: 9,865,937.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950,761 : 17,871,580.76 = 7,149,417.88 : x
  2. Step 2: Convert to fraction form
    12,950,761/17,871,580.76 = 7,149,417.88/x
  3. Step 3: Cross multiply
    12,950,761x = 17,871,580.76 × 7,149,417.88
  4. Step 4: Simplify right side
    12,950,761x = 127,771,399,029,408
  5. Step 5: Solve for x
    x = 127,771,399,029,408/12,950,761
  6. Step 6: Final answer
    x = 9,865,937.53

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