Home / 90,931.34-125,489.16-50,645.12

Finding the Fourth Proportional to 90,931.34, 125,489.16 and 50,645.12

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Solution

The fourth proportional to 90,931.34, 125,489.16 and 50,645.12 is: 69,892.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,931.34 : 125,489.16 = 50,645.12 : x
  2. Step 2: Convert to fraction form
    90,931.34/125,489.16 = 50,645.12/x
  3. Step 3: Cross multiply
    90,931.34x = 125,489.16 × 50,645.12
  4. Step 4: Simplify right side
    90,931.34x = 6,355,413,566.90
  5. Step 5: Solve for x
    x = 6,355,413,566.90/90,931.34
  6. Step 6: Final answer
    x = 69,892.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.