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Finding the Fourth Proportional to 85,271.94, 117,605.52 and 75,718.80

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Solution

The fourth proportional to 85,271.94, 117,605.52 and 75,718.80 is: 104,430.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,271.94 : 117,605.52 = 75,718.80 : x
  2. Step 2: Convert to fraction form
    85,271.94/117,605.52 = 75,718.80/x
  3. Step 3: Cross multiply
    85,271.94x = 117,605.52 × 75,718.80
  4. Step 4: Simplify right side
    85,271.94x = 8,904,948,847.78
  5. Step 5: Solve for x
    x = 8,904,948,847.78/85,271.94
  6. Step 6: Final answer
    x = 104,430.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.