Home / 85,405.04-128,107.08-29,245.64

Finding the Fourth Proportional to 85,405.04, 128,107.08 and 29,245.64

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Solution

The fourth proportional to 85,405.04, 128,107.08 and 29,245.64 is: 43,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,405.04 : 128,107.08 = 29,245.64 : x
  2. Step 2: Convert to fraction form
    85,405.04/128,107.08 = 29,245.64/x
  3. Step 3: Cross multiply
    85,405.04x = 128,107.08 × 29,245.64
  4. Step 4: Simplify right side
    85,405.04x = 3,746,573,543.13
  5. Step 5: Solve for x
    x = 3,746,573,543.13/85,405.04
  6. Step 6: Final answer
    x = 43,868.30

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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.