Home / 85,379.37-128,057.02-53,692.84

Finding the Fourth Proportional to 85,379.37, 128,057.02 and 53,692.84

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Solution

The fourth proportional to 85,379.37, 128,057.02 and 53,692.84 is: 80,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,379.37 : 128,057.02 = 53,692.84 : x
  2. Step 2: Convert to fraction form
    85,379.37/128,057.02 = 53,692.84/x
  3. Step 3: Cross multiply
    85,379.37x = 128,057.02 × 53,692.84
  4. Step 4: Simplify right side
    85,379.37x = 6,875,745,111.58
  5. Step 5: Solve for x
    x = 6,875,745,111.58/85,379.37
  6. Step 6: Final answer
    x = 80,531.70

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1.5x scale

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.