Home / 51,243.20-76,864.80-40,875.20

Finding the Fourth Proportional to 51,243.20, 76,864.80 and 40,875.20

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Solution

The fourth proportional to 51,243.20, 76,864.80 and 40,875.20 is: 61,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,243.20 : 76,864.80 = 40,875.20 : x
  2. Step 2: Convert to fraction form
    51,243.20/76,864.80 = 40,875.20/x
  3. Step 3: Cross multiply
    51,243.20x = 76,864.80 × 40,875.20
  4. Step 4: Simplify right side
    51,243.20x = 3,141,864,072.96
  5. Step 5: Solve for x
    x = 3,141,864,072.96/51,243.20
  6. Step 6: Final answer
    x = 61,312.80

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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.