Home / 42,890.55-64,313.88-17,923.78

Finding the Fourth Proportional to 42,890.55, 64,313.88 and 17,923.78

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Solution

The fourth proportional to 42,890.55, 64,313.88 and 17,923.78 is: 26,876.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,890.55 : 64,313.88 = 17,923.78 : x
  2. Step 2: Convert to fraction form
    42,890.55/64,313.88 = 17,923.78/x
  3. Step 3: Cross multiply
    42,890.55x = 64,313.88 × 17,923.78
  4. Step 4: Simplify right side
    42,890.55x = 1,152,747,836.07
  5. Step 5: Solve for x
    x = 1,152,747,836.07/42,890.55
  6. Step 6: Final answer
    x = 26,876.50

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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.