Home / 85,764.24-128,424.76-59,192.20

Finding the Fourth Proportional to 85,764.24, 128,424.76 and 59,192.20

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Solution

The fourth proportional to 85,764.24, 128,424.76 and 59,192.20 is: 88,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,764.24 : 128,424.76 = 59,192.20 : x
  2. Step 2: Convert to fraction form
    85,764.24/128,424.76 = 59,192.20/x
  3. Step 3: Cross multiply
    85,764.24x = 128,424.76 × 59,192.20
  4. Step 4: Simplify right side
    85,764.24x = 7,601,744,078.87
  5. Step 5: Solve for x
    x = 7,601,744,078.87/85,764.24
  6. Step 6: Final answer
    x = 88,635.36

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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.