Home / 57,045.54-78,628.52-42,873.78

Finding the Fourth Proportional to 57,045.54, 78,628.52 and 42,873.78

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Solution

The fourth proportional to 57,045.54, 78,628.52 and 42,873.78 is: 59,094.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,045.54 : 78,628.52 = 42,873.78 : x
  2. Step 2: Convert to fraction form
    57,045.54/78,628.52 = 42,873.78/x
  3. Step 3: Cross multiply
    57,045.54x = 78,628.52 × 42,873.78
  4. Step 4: Simplify right side
    57,045.54x = 3,371,101,868.21
  5. Step 5: Solve for x
    x = 3,371,101,868.21/57,045.54
  6. Step 6: Final answer
    x = 59,094.92

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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.