Home / 85,563.28-128,312.96-29,387.44

Finding the Fourth Proportional to 85,563.28, 128,312.96 and 29,387.44

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Solution

The fourth proportional to 85,563.28, 128,312.96 and 29,387.44 is: 44,070.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,563.28 : 128,312.96 = 29,387.44 : x
  2. Step 2: Convert to fraction form
    85,563.28/128,312.96 = 29,387.44/x
  3. Step 3: Cross multiply
    85,563.28x = 128,312.96 × 29,387.44
  4. Step 4: Simplify right side
    85,563.28x = 3,770,789,413.22
  5. Step 5: Solve for x
    x = 3,770,789,413.22/85,563.28
  6. Step 6: Final answer
    x = 44,070.18

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1.5x scale

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.