Home / 90,070.14-135,057.42-45,042.24

Finding the Fourth Proportional to 90,070.14, 135,057.42 and 45,042.24

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Solution

The fourth proportional to 90,070.14, 135,057.42 and 45,042.24 is: 67,539.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,070.14 : 135,057.42 = 45,042.24 : x
  2. Step 2: Convert to fraction form
    90,070.14/135,057.42 = 45,042.24/x
  3. Step 3: Cross multiply
    90,070.14x = 135,057.42 × 45,042.24
  4. Step 4: Simplify right side
    90,070.14x = 6,083,288,725.42
  5. Step 5: Solve for x
    x = 6,083,288,725.42/90,070.14
  6. Step 6: Final answer
    x = 67,539.46

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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.