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Finding the Fourth Proportional to 54,999.40, 82,401.90 and 51,500.20

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Solution

The fourth proportional to 54,999.40, 82,401.90 and 51,500.20 is: 77,159.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,999.40 : 82,401.90 = 51,500.20 : x
  2. Step 2: Convert to fraction form
    54,999.40/82,401.90 = 51,500.20/x
  3. Step 3: Cross multiply
    54,999.40x = 82,401.90 × 51,500.20
  4. Step 4: Simplify right side
    54,999.40x = 4,243,714,330.38
  5. Step 5: Solve for x
    x = 4,243,714,330.38/54,999.40
  6. Step 6: Final answer
    x = 77,159.28

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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.