Home / 85,930.10-128,870.36-29,767.94

Finding the Fourth Proportional to 85,930.10, 128,870.36 and 29,767.94

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Solution

The fourth proportional to 85,930.10, 128,870.36 and 29,767.94 is: 44,643.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,930.10 : 128,870.36 = 29,767.94 : x
  2. Step 2: Convert to fraction form
    85,930.10/128,870.36 = 29,767.94/x
  3. Step 3: Cross multiply
    85,930.10x = 128,870.36 × 29,767.94
  4. Step 4: Simplify right side
    85,930.10x = 3,836,205,144.26
  5. Step 5: Solve for x
    x = 3,836,205,144.26/85,930.10
  6. Step 6: Final answer
    x = 44,643.32

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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.