Home / 57,313.95-85,939.43-19,870.68

Finding the Fourth Proportional to 57,313.95, 85,939.43 and 19,870.68

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Solution

The fourth proportional to 57,313.95, 85,939.43 and 19,870.68 is: 29,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,313.95 : 85,939.43 = 19,870.68 : x
  2. Step 2: Convert to fraction form
    57,313.95/85,939.43 = 19,870.68/x
  3. Step 3: Cross multiply
    57,313.95x = 85,939.43 × 19,870.68
  4. Step 4: Simplify right side
    57,313.95x = 1,707,674,813.56
  5. Step 5: Solve for x
    x = 1,707,674,813.56/57,313.95
  6. Step 6: Final answer
    x = 29,795.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.