Home / 76,913.35-106,140.20-42,921.47

Finding the Fourth Proportional to 76,913.35, 106,140.20 and 42,921.47

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Solution

The fourth proportional to 76,913.35, 106,140.20 and 42,921.47 is: 59,231.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,913.35 : 106,140.20 = 42,921.47 : x
  2. Step 2: Convert to fraction form
    76,913.35/106,140.20 = 42,921.47/x
  3. Step 3: Cross multiply
    76,913.35x = 106,140.20 × 42,921.47
  4. Step 4: Simplify right side
    76,913.35x = 4,555,693,410.09
  5. Step 5: Solve for x
    x = 4,555,693,410.09/76,913.35
  6. Step 6: Final answer
    x = 59,231.50

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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.