Home / 85,692.08-128,564.37-38,347.02

Finding the Fourth Proportional to 85,692.08, 128,564.37 and 38,347.02

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Solution

The fourth proportional to 85,692.08, 128,564.37 and 38,347.02 is: 57,532.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,692.08 : 128,564.37 = 38,347.02 : x
  2. Step 2: Convert to fraction form
    85,692.08/128,564.37 = 38,347.02/x
  3. Step 3: Cross multiply
    85,692.08x = 128,564.37 × 38,347.02
  4. Step 4: Simplify right side
    85,692.08x = 4,930,060,467.68
  5. Step 5: Solve for x
    x = 4,930,060,467.68/85,692.08
  6. Step 6: Final answer
    x = 57,532.28

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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.