Home / 85,364.18-128,061.30-29,191.08

Finding the Fourth Proportional to 85,364.18, 128,061.30 and 29,191.08

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Solution

The fourth proportional to 85,364.18, 128,061.30 and 29,191.08 is: 43,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,364.18 : 128,061.30 = 29,191.08 : x
  2. Step 2: Convert to fraction form
    85,364.18/128,061.30 = 29,191.08/x
  3. Step 3: Cross multiply
    85,364.18x = 128,061.30 × 29,191.08
  4. Step 4: Simplify right side
    85,364.18x = 3,738,248,242.90
  5. Step 5: Solve for x
    x = 3,738,248,242.90/85,364.18
  6. Step 6: Final answer
    x = 43,791.77

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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.