Home / 105,631.88-145,775.55-57,884.81

Finding the Fourth Proportional to 105,631.88, 145,775.55 and 57,884.81

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Solution

The fourth proportional to 105,631.88, 145,775.55 and 57,884.81 is: 79,882.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,631.88 : 145,775.55 = 57,884.81 : x
  2. Step 2: Convert to fraction form
    105,631.88/145,775.55 = 57,884.81/x
  3. Step 3: Cross multiply
    105,631.88x = 145,775.55 × 57,884.81
  4. Step 4: Simplify right side
    105,631.88x = 8,438,189,724.97
  5. Step 5: Solve for x
    x = 8,438,189,724.97/105,631.88
  6. Step 6: Final answer
    x = 79,882.98

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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.