Home / 76,126.26-105,054.45-42,137.09

Finding the Fourth Proportional to 76,126.26, 105,054.45 and 42,137.09

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Solution

The fourth proportional to 76,126.26, 105,054.45 and 42,137.09 is: 58,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,126.26 : 105,054.45 = 42,137.09 : x
  2. Step 2: Convert to fraction form
    76,126.26/105,054.45 = 42,137.09/x
  3. Step 3: Cross multiply
    76,126.26x = 105,054.45 × 42,137.09
  4. Step 4: Simplify right side
    76,126.26x = 4,426,689,353.17
  5. Step 5: Solve for x
    x = 4,426,689,353.17/76,126.26
  6. Step 6: Final answer
    x = 58,149.31

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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.