Home / 85,941.36-128,934.40-26,778

Finding the Fourth Proportional to 85,941.36, 128,934.40 and 26,778

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Solution

The fourth proportional to 85,941.36, 128,934.40 and 26,778 is: 40,173.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,941.36 : 128,934.40 = 26,778 : x
  2. Step 2: Convert to fraction form
    85,941.36/128,934.40 = 26,778/x
  3. Step 3: Cross multiply
    85,941.36x = 128,934.40 × 26,778
  4. Step 4: Simplify right side
    85,941.36x = 3,452,605,363.20
  5. Step 5: Solve for x
    x = 3,452,605,363.20/85,941.36
  6. Step 6: Final answer
    x = 40,173.97

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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.