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Finding the Fourth Proportional to 85,907.37, 128,830.15 and 29,732.23

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Solution

The fourth proportional to 85,907.37, 128,830.15 and 29,732.23 is: 44,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,907.37 : 128,830.15 = 29,732.23 : x
  2. Step 2: Convert to fraction form
    85,907.37/128,830.15 = 29,732.23/x
  3. Step 3: Cross multiply
    85,907.37x = 128,830.15 × 29,732.23
  4. Step 4: Simplify right side
    85,907.37x = 3,830,407,650.73
  5. Step 5: Solve for x
    x = 3,830,407,650.73/85,907.37
  6. Step 6: Final answer
    x = 44,587.65

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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.