Home / 57,045.80-78,628.86-42,874.04

Finding the Fourth Proportional to 57,045.80, 78,628.86 and 42,874.04

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Solution

The fourth proportional to 57,045.80, 78,628.86 and 42,874.04 is: 59,095.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,045.80 : 78,628.86 = 42,874.04 : x
  2. Step 2: Convert to fraction form
    57,045.80/78,628.86 = 42,874.04/x
  3. Step 3: Cross multiply
    57,045.80x = 78,628.86 × 42,874.04
  4. Step 4: Simplify right side
    57,045.80x = 3,371,137,085.37
  5. Step 5: Solve for x
    x = 3,371,137,085.37/57,045.80
  6. Step 6: Final answer
    x = 59,095.27

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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.