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Finding the Fourth Proportional to 55,445.40, 83,151.90 and 19,902.60

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Solution

The fourth proportional to 55,445.40, 83,151.90 and 19,902.60 is: 29,848.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,445.40 : 83,151.90 = 19,902.60 : x
  2. Step 2: Convert to fraction form
    55,445.40/83,151.90 = 19,902.60/x
  3. Step 3: Cross multiply
    55,445.40x = 83,151.90 × 19,902.60
  4. Step 4: Simplify right side
    55,445.40x = 1,654,939,004.94
  5. Step 5: Solve for x
    x = 1,654,939,004.94/55,445.40
  6. Step 6: Final answer
    x = 29,848.08

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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.