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Finding the Fourth Proportional to 82,989.40, 124,484.10 and 23,819.80

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Solution

The fourth proportional to 82,989.40, 124,484.10 and 23,819.80 is: 35,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,989.40 : 124,484.10 = 23,819.80 : x
  2. Step 2: Convert to fraction form
    82,989.40/124,484.10 = 23,819.80/x
  3. Step 3: Cross multiply
    82,989.40x = 124,484.10 × 23,819.80
  4. Step 4: Simplify right side
    82,989.40x = 2,965,186,365.18
  5. Step 5: Solve for x
    x = 2,965,186,365.18/82,989.40
  6. Step 6: Final answer
    x = 35,729.70

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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.