Home / 76,324.40-105,327.56-42,790.40

Finding the Fourth Proportional to 76,324.40, 105,327.56 and 42,790.40

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Solution

The fourth proportional to 76,324.40, 105,327.56 and 42,790.40 is: 59,050.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,324.40 : 105,327.56 = 42,790.40 : x
  2. Step 2: Convert to fraction form
    76,324.40/105,327.56 = 42,790.40/x
  3. Step 3: Cross multiply
    76,324.40x = 105,327.56 × 42,790.40
  4. Step 4: Simplify right side
    76,324.40x = 4,507,008,423.42
  5. Step 5: Solve for x
    x = 4,507,008,423.42/76,324.40
  6. Step 6: Final answer
    x = 59,050.69

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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.