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Finding the Fourth Proportional to 69,520, 96,016.80 and 47,125.12

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Solution

The fourth proportional to 69,520, 96,016.80 and 47,125.12 is: 65,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,520 : 96,016.80 = 47,125.12 : x
  2. Step 2: Convert to fraction form
    69,520/96,016.80 = 47,125.12/x
  3. Step 3: Cross multiply
    69,520x = 96,016.80 × 47,125.12
  4. Step 4: Simplify right side
    69,520x = 4,524,803,222.02
  5. Step 5: Solve for x
    x = 4,524,803,222.02/69,520
  6. Step 6: Final answer
    x = 65,086.35

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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.