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Finding the Fourth Proportional to 85,149.95, 117,510.56 and 47,424.20

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Solution

The fourth proportional to 85,149.95, 117,510.56 and 47,424.20 is: 65,447.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,149.95 : 117,510.56 = 47,424.20 : x
  2. Step 2: Convert to fraction form
    85,149.95/117,510.56 = 47,424.20/x
  3. Step 3: Cross multiply
    85,149.95x = 117,510.56 × 47,424.20
  4. Step 4: Simplify right side
    85,149.95x = 5,572,843,474.88
  5. Step 5: Solve for x
    x = 5,572,843,474.88/85,149.95
  6. Step 6: Final answer
    x = 65,447.41

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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.