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Finding the Fourth Proportional to 85,774.73, 128,630.51 and 29,600.51

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Solution

The fourth proportional to 85,774.73, 128,630.51 and 29,600.51 is: 44,389.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,774.73 : 128,630.51 = 29,600.51 : x
  2. Step 2: Convert to fraction form
    85,774.73/128,630.51 = 29,600.51/x
  3. Step 3: Cross multiply
    85,774.73x = 128,630.51 × 29,600.51
  4. Step 4: Simplify right side
    85,774.73x = 3,807,528,549.56
  5. Step 5: Solve for x
    x = 3,807,528,549.56/85,774.73
  6. Step 6: Final answer
    x = 44,389.86

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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.