Home / 85,631.87-128,460.13-26,472.17

Finding the Fourth Proportional to 85,631.87, 128,460.13 and 26,472.17

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Solution

The fourth proportional to 85,631.87, 128,460.13 and 26,472.17 is: 39,712.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,631.87 : 128,460.13 = 26,472.17 : x
  2. Step 2: Convert to fraction form
    85,631.87/128,460.13 = 26,472.17/x
  3. Step 3: Cross multiply
    85,631.87x = 128,460.13 × 26,472.17
  4. Step 4: Simplify right side
    85,631.87x = 3,400,618,654.55
  5. Step 5: Solve for x
    x = 3,400,618,654.55/85,631.87
  6. Step 6: Final answer
    x = 39,712.07

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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.