Home / 85,765.04-128,656.20-23,436.08

Finding the Fourth Proportional to 85,765.04, 128,656.20 and 23,436.08

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Solution

The fourth proportional to 85,765.04, 128,656.20 and 23,436.08 is: 35,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,765.04 : 128,656.20 = 23,436.08 : x
  2. Step 2: Convert to fraction form
    85,765.04/128,656.20 = 23,436.08/x
  3. Step 3: Cross multiply
    85,765.04x = 128,656.20 × 23,436.08
  4. Step 4: Simplify right side
    85,765.04x = 3,015,196,995.70
  5. Step 5: Solve for x
    x = 3,015,196,995.70/85,765.04
  6. Step 6: Final answer
    x = 35,156.48

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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.