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Finding the Fourth Proportional to 85,692.24, 118,253.40 and 47,449.56

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Solution

The fourth proportional to 85,692.24, 118,253.40 and 47,449.56 is: 65,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,692.24 : 118,253.40 = 47,449.56 : x
  2. Step 2: Convert to fraction form
    85,692.24/118,253.40 = 47,449.56/x
  3. Step 3: Cross multiply
    85,692.24x = 118,253.40 × 47,449.56
  4. Step 4: Simplify right side
    85,692.24x = 5,611,071,798.50
  5. Step 5: Solve for x
    x = 5,611,071,798.50/85,692.24
  6. Step 6: Final answer
    x = 65,479.35

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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.