Home / 76,749.05-105,916.96-42,757.52

Finding the Fourth Proportional to 76,749.05, 105,916.96 and 42,757.52

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Solution

The fourth proportional to 76,749.05, 105,916.96 and 42,757.52 is: 59,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,749.05 : 105,916.96 = 42,757.52 : x
  2. Step 2: Convert to fraction form
    76,749.05/105,916.96 = 42,757.52/x
  3. Step 3: Cross multiply
    76,749.05x = 105,916.96 × 42,757.52
  4. Step 4: Simplify right side
    76,749.05x = 4,528,746,163.85
  5. Step 5: Solve for x
    x = 4,528,746,163.85/76,749.05
  6. Step 6: Final answer
    x = 59,007.20

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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.