Home / 85,976.96-128,973.48-29,808.32

Finding the Fourth Proportional to 85,976.96, 128,973.48 and 29,808.32

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Solution

The fourth proportional to 85,976.96, 128,973.48 and 29,808.32 is: 44,715.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,976.96 : 128,973.48 = 29,808.32 : x
  2. Step 2: Convert to fraction form
    85,976.96/128,973.48 = 29,808.32/x
  3. Step 3: Cross multiply
    85,976.96x = 128,973.48 × 29,808.32
  4. Step 4: Simplify right side
    85,976.96x = 3,844,482,763.35
  5. Step 5: Solve for x
    x = 3,844,482,763.35/85,976.96
  6. Step 6: Final answer
    x = 44,715.27

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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.