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Finding the Fourth Proportional to 31,737.60, 47,606.40 and 17,740.80

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Solution

The fourth proportional to 31,737.60, 47,606.40 and 17,740.80 is: 26,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,737.60 : 47,606.40 = 17,740.80 : x
  2. Step 2: Convert to fraction form
    31,737.60/47,606.40 = 17,740.80/x
  3. Step 3: Cross multiply
    31,737.60x = 47,606.40 × 17,740.80
  4. Step 4: Simplify right side
    31,737.60x = 844,575,621.12
  5. Step 5: Solve for x
    x = 844,575,621.12/31,737.60
  6. Step 6: Final answer
    x = 26,611.20

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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.