Home / 76,768.35-105,926.29-42,775.99

Finding the Fourth Proportional to 76,768.35, 105,926.29 and 42,775.99

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Solution

The fourth proportional to 76,768.35, 105,926.29 and 42,775.99 is: 59,023.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,768.35 : 105,926.29 = 42,775.99 : x
  2. Step 2: Convert to fraction form
    76,768.35/105,926.29 = 42,775.99/x
  3. Step 3: Cross multiply
    76,768.35x = 105,926.29 × 42,775.99
  4. Step 4: Simplify right side
    76,768.35x = 4,531,101,921.78
  5. Step 5: Solve for x
    x = 4,531,101,921.78/76,768.35
  6. Step 6: Final answer
    x = 59,023.05

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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.