Home / 84,721.40-116,929.55-47,007.80

Finding the Fourth Proportional to 84,721.40, 116,929.55 and 47,007.80

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Solution

The fourth proportional to 84,721.40, 116,929.55 and 47,007.80 is: 64,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,721.40 : 116,929.55 = 47,007.80 : x
  2. Step 2: Convert to fraction form
    84,721.40/116,929.55 = 47,007.80/x
  3. Step 3: Cross multiply
    84,721.40x = 116,929.55 × 47,007.80
  4. Step 4: Simplify right side
    84,721.40x = 5,496,600,900.49
  5. Step 5: Solve for x
    x = 5,496,600,900.49/84,721.40
  6. Step 6: Final answer
    x = 64,878.54

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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.