Home / 85,727.14-128,528.40-35,821.52

Finding the Fourth Proportional to 85,727.14, 128,528.40 and 35,821.52

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Solution

The fourth proportional to 85,727.14, 128,528.40 and 35,821.52 is: 53,706.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,727.14 : 128,528.40 = 35,821.52 : x
  2. Step 2: Convert to fraction form
    85,727.14/128,528.40 = 35,821.52/x
  3. Step 3: Cross multiply
    85,727.14x = 128,528.40 × 35,821.52
  4. Step 4: Simplify right side
    85,727.14x = 4,604,082,651.17
  5. Step 5: Solve for x
    x = 4,604,082,651.17/85,727.14
  6. Step 6: Final answer
    x = 53,706.24

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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.