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Finding the Fourth Proportional to 71,692.84, 98,933.53 and 39,427.18

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Solution

The fourth proportional to 71,692.84, 98,933.53 and 39,427.18 is: 54,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,692.84 : 98,933.53 = 39,427.18 : x
  2. Step 2: Convert to fraction form
    71,692.84/98,933.53 = 39,427.18/x
  3. Step 3: Cross multiply
    71,692.84x = 98,933.53 × 39,427.18
  4. Step 4: Simplify right side
    71,692.84x = 3,900,670,095.35
  5. Step 5: Solve for x
    x = 3,900,670,095.35/71,692.84
  6. Step 6: Final answer
    x = 54,408.08

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1.5x scale

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.