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Finding the Fourth Proportional to 70,283.34, 105,408.45 and 25,885.98

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Solution

The fourth proportional to 70,283.34, 105,408.45 and 25,885.98 is: 38,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,283.34 : 105,408.45 = 25,885.98 : x
  2. Step 2: Convert to fraction form
    70,283.34/105,408.45 = 25,885.98/x
  3. Step 3: Cross multiply
    70,283.34x = 105,408.45 × 25,885.98
  4. Step 4: Simplify right side
    70,283.34x = 2,728,601,028.53
  5. Step 5: Solve for x
    x = 2,728,601,028.53/70,283.34
  6. Step 6: Final answer
    x = 38,822.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.