Home / 85,975.96-128,971.98-29,807.32

Finding the Fourth Proportional to 85,975.96, 128,971.98 and 29,807.32

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Solution

The fourth proportional to 85,975.96, 128,971.98 and 29,807.32 is: 44,713.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,975.96 : 128,971.98 = 29,807.32 : x
  2. Step 2: Convert to fraction form
    85,975.96/128,971.98 = 29,807.32/x
  3. Step 3: Cross multiply
    85,975.96x = 128,971.98 × 29,807.32
  4. Step 4: Simplify right side
    85,975.96x = 3,844,309,078.89
  5. Step 5: Solve for x
    x = 3,844,309,078.89/85,975.96
  6. Step 6: Final answer
    x = 44,713.77

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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.