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Finding the Fourth Proportional to 85,656.33, 128,498.19 and 29,482.62

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Solution

The fourth proportional to 85,656.33, 128,498.19 and 29,482.62 is: 44,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,656.33 : 128,498.19 = 29,482.62 : x
  2. Step 2: Convert to fraction form
    85,656.33/128,498.19 = 29,482.62/x
  3. Step 3: Cross multiply
    85,656.33x = 128,498.19 × 29,482.62
  4. Step 4: Simplify right side
    85,656.33x = 3,788,463,306.46
  5. Step 5: Solve for x
    x = 3,788,463,306.46/85,656.33
  6. Step 6: Final answer
    x = 44,228.64

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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.