Home / 85,734.10-128,601.15-23,404.60

Finding the Fourth Proportional to 85,734.10, 128,601.15 and 23,404.60

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Solution

The fourth proportional to 85,734.10, 128,601.15 and 23,404.60 is: 35,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,734.10 : 128,601.15 = 23,404.60 : x
  2. Step 2: Convert to fraction form
    85,734.10/128,601.15 = 23,404.60/x
  3. Step 3: Cross multiply
    85,734.10x = 128,601.15 × 23,404.60
  4. Step 4: Simplify right side
    85,734.10x = 3,009,858,475.29
  5. Step 5: Solve for x
    x = 3,009,858,475.29/85,734.10
  6. Step 6: Final answer
    x = 35,106.90

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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.