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Finding the Fourth Proportional to 47,406.54, 70,990.88 and 42,912.94

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Solution

The fourth proportional to 47,406.54, 70,990.88 and 42,912.94 is: 64,261.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,406.54 : 70,990.88 = 42,912.94 : x
  2. Step 2: Convert to fraction form
    47,406.54/70,990.88 = 42,912.94/x
  3. Step 3: Cross multiply
    47,406.54x = 70,990.88 × 42,912.94
  4. Step 4: Simplify right side
    47,406.54x = 3,046,427,373.99
  5. Step 5: Solve for x
    x = 3,046,427,373.99/47,406.54
  6. Step 6: Final answer
    x = 64,261.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.