Home / 85,422.90-128,134.04-23,093.40

Finding the Fourth Proportional to 85,422.90, 128,134.04 and 23,093.40

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Solution

The fourth proportional to 85,422.90, 128,134.04 and 23,093.40 is: 34,640.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,422.90 : 128,134.04 = 23,093.40 : x
  2. Step 2: Convert to fraction form
    85,422.90/128,134.04 = 23,093.40/x
  3. Step 3: Cross multiply
    85,422.90x = 128,134.04 × 23,093.40
  4. Step 4: Simplify right side
    85,422.90x = 2,959,050,639.34
  5. Step 5: Solve for x
    x = 2,959,050,639.34/85,422.90
  6. Step 6: Final answer
    x = 34,640.02

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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.