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Finding the Fourth Proportional to 40,283.40, 60,434.70 and 19,489.80

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Solution

The fourth proportional to 40,283.40, 60,434.70 and 19,489.80 is: 29,239.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,283.40 : 60,434.70 = 19,489.80 : x
  2. Step 2: Convert to fraction form
    40,283.40/60,434.70 = 19,489.80/x
  3. Step 3: Cross multiply
    40,283.40x = 60,434.70 × 19,489.80
  4. Step 4: Simplify right side
    40,283.40x = 1,177,860,216.06
  5. Step 5: Solve for x
    x = 1,177,860,216.06/40,283.40
  6. Step 6: Final answer
    x = 29,239.34

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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.