Home / 90,658.12-125,069.45-56,643.44

Finding the Fourth Proportional to 90,658.12, 125,069.45 and 56,643.44

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Solution

The fourth proportional to 90,658.12, 125,069.45 and 56,643.44 is: 78,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,658.12 : 125,069.45 = 56,643.44 : x
  2. Step 2: Convert to fraction form
    90,658.12/125,069.45 = 56,643.44/x
  3. Step 3: Cross multiply
    90,658.12x = 125,069.45 × 56,643.44
  4. Step 4: Simplify right side
    90,658.12x = 7,084,363,261.56
  5. Step 5: Solve for x
    x = 7,084,363,261.56/90,658.12
  6. Step 6: Final answer
    x = 78,143.73

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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.