Home / 85,792.29-128,705.64-29,634.45

Finding the Fourth Proportional to 85,792.29, 128,705.64 and 29,634.45

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Solution

The fourth proportional to 85,792.29, 128,705.64 and 29,634.45 is: 44,457.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,792.29 : 128,705.64 = 29,634.45 : x
  2. Step 2: Convert to fraction form
    85,792.29/128,705.64 = 29,634.45/x
  3. Step 3: Cross multiply
    85,792.29x = 128,705.64 × 29,634.45
  4. Step 4: Simplify right side
    85,792.29x = 3,814,120,853.30
  5. Step 5: Solve for x
    x = 3,814,120,853.30/85,792.29
  6. Step 6: Final answer
    x = 44,457.62

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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.