Home / 85,890.64-128,844.78-29,730.66

Finding the Fourth Proportional to 85,890.64, 128,844.78 and 29,730.66

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Solution

The fourth proportional to 85,890.64, 128,844.78 and 29,730.66 is: 44,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,890.64 : 128,844.78 = 29,730.66 : x
  2. Step 2: Convert to fraction form
    85,890.64/128,844.78 = 29,730.66/x
  3. Step 3: Cross multiply
    85,890.64x = 128,844.78 × 29,730.66
  4. Step 4: Simplify right side
    85,890.64x = 3,830,640,346.95
  5. Step 5: Solve for x
    x = 3,830,640,346.95/85,890.64
  6. Step 6: Final answer
    x = 44,599.04

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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.