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Finding the Fourth Proportional to 99,570.48, 137,401.20 and 54,858.48

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Solution

The fourth proportional to 99,570.48, 137,401.20 and 54,858.48 is: 75,701.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,570.48 : 137,401.20 = 54,858.48 : x
  2. Step 2: Convert to fraction form
    99,570.48/137,401.20 = 54,858.48/x
  3. Step 3: Cross multiply
    99,570.48x = 137,401.20 × 54,858.48
  4. Step 4: Simplify right side
    99,570.48x = 7,537,620,982.18
  5. Step 5: Solve for x
    x = 7,537,620,982.18/99,570.48
  6. Step 6: Final answer
    x = 75,701.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.