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Finding the Fourth Proportional to 85,675.95, 118,235.16 and 47,950.20

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Solution

The fourth proportional to 85,675.95, 118,235.16 and 47,950.20 is: 66,172.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,675.95 : 118,235.16 = 47,950.20 : x
  2. Step 2: Convert to fraction form
    85,675.95/118,235.16 = 47,950.20/x
  3. Step 3: Cross multiply
    85,675.95x = 118,235.16 × 47,950.20
  4. Step 4: Simplify right side
    85,675.95x = 5,669,399,569.03
  5. Step 5: Solve for x
    x = 5,669,399,569.03/85,675.95
  6. Step 6: Final answer
    x = 66,172.59

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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.