Home / 85,607.12-128,326.44-50,023.28

Finding the Fourth Proportional to 85,607.12, 128,326.44 and 50,023.28

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Solution

The fourth proportional to 85,607.12, 128,326.44 and 50,023.28 is: 74,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,607.12 : 128,326.44 = 50,023.28 : x
  2. Step 2: Convert to fraction form
    85,607.12/128,326.44 = 50,023.28/x
  3. Step 3: Cross multiply
    85,607.12x = 128,326.44 × 50,023.28
  4. Step 4: Simplify right side
    85,607.12x = 6,419,309,439.52
  5. Step 5: Solve for x
    x = 6,419,309,439.52/85,607.12
  6. Step 6: Final answer
    x = 74,985.70

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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.