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Finding the Fourth Proportional to 81,615.01, 112,520.44 and 53,271.49

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Solution

The fourth proportional to 81,615.01, 112,520.44 and 53,271.49 is: 73,443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,615.01 : 112,520.44 = 53,271.49 : x
  2. Step 2: Convert to fraction form
    81,615.01/112,520.44 = 53,271.49/x
  3. Step 3: Cross multiply
    81,615.01x = 112,520.44 × 53,271.49
  4. Step 4: Simplify right side
    81,615.01x = 5,994,131,494.26
  5. Step 5: Solve for x
    x = 5,994,131,494.26/81,615.01
  6. Step 6: Final answer
    x = 73,443.98

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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.