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Finding the Fourth Proportional to 82,895.40, 124,343.10 and 75,637.80

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Solution

The fourth proportional to 82,895.40, 124,343.10 and 75,637.80 is: 113,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,895.40 : 124,343.10 = 75,637.80 : x
  2. Step 2: Convert to fraction form
    82,895.40/124,343.10 = 75,637.80/x
  3. Step 3: Cross multiply
    82,895.40x = 124,343.10 × 75,637.80
  4. Step 4: Simplify right side
    82,895.40x = 9,405,038,529.18
  5. Step 5: Solve for x
    x = 9,405,038,529.18/82,895.40
  6. Step 6: Final answer
    x = 113,456.70

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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.