Home / 90,564.48-135,655.20-57,267.36

Finding the Fourth Proportional to 90,564.48, 135,655.20 and 57,267.36

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Solution

The fourth proportional to 90,564.48, 135,655.20 and 57,267.36 is: 85,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,564.48 : 135,655.20 = 57,267.36 : x
  2. Step 2: Convert to fraction form
    90,564.48/135,655.20 = 57,267.36/x
  3. Step 3: Cross multiply
    90,564.48x = 135,655.20 × 57,267.36
  4. Step 4: Simplify right side
    90,564.48x = 7,768,615,174.27
  5. Step 5: Solve for x
    x = 7,768,615,174.27/90,564.48
  6. Step 6: Final answer
    x = 85,779.93

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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.