Home / 85,938.72-128,883.06-29,776.56

Finding the Fourth Proportional to 85,938.72, 128,883.06 and 29,776.56

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Solution

The fourth proportional to 85,938.72, 128,883.06 and 29,776.56 is: 44,656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,938.72 : 128,883.06 = 29,776.56 : x
  2. Step 2: Convert to fraction form
    85,938.72/128,883.06 = 29,776.56/x
  3. Step 3: Cross multiply
    85,938.72x = 128,883.06 × 29,776.56
  4. Step 4: Simplify right side
    85,938.72x = 3,837,694,169.07
  5. Step 5: Solve for x
    x = 3,837,694,169.07/85,938.72
  6. Step 6: Final answer
    x = 44,656.17

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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.