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Finding the Fourth Proportional to 83,325.31, 124,988.78 and 20,995.81

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Solution

The fourth proportional to 83,325.31, 124,988.78 and 20,995.81 is: 31,493.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,325.31 : 124,988.78 = 20,995.81 : x
  2. Step 2: Convert to fraction form
    83,325.31/124,988.78 = 20,995.81/x
  3. Step 3: Cross multiply
    83,325.31x = 124,988.78 × 20,995.81
  4. Step 4: Simplify right side
    83,325.31x = 2,624,240,572.03
  5. Step 5: Solve for x
    x = 2,624,240,572.03/83,325.31
  6. Step 6: Final answer
    x = 31,493.92

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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.