Home / 85,669.20-128,488.30-23,325.12

Finding the Fourth Proportional to 85,669.20, 128,488.30 and 23,325.12

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Solution

The fourth proportional to 85,669.20, 128,488.30 and 23,325.12 is: 34,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,669.20 : 128,488.30 = 23,325.12 : x
  2. Step 2: Convert to fraction form
    85,669.20/128,488.30 = 23,325.12/x
  3. Step 3: Cross multiply
    85,669.20x = 128,488.30 × 23,325.12
  4. Step 4: Simplify right side
    85,669.20x = 2,997,005,016.10
  5. Step 5: Solve for x
    x = 2,997,005,016.10/85,669.20
  6. Step 6: Final answer
    x = 34,983.46

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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.