Home / 98,579.40-147,890.70-39,400.20

Finding the Fourth Proportional to 98,579.40, 147,890.70 and 39,400.20

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Solution

The fourth proportional to 98,579.40, 147,890.70 and 39,400.20 is: 59,108.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,579.40 : 147,890.70 = 39,400.20 : x
  2. Step 2: Convert to fraction form
    98,579.40/147,890.70 = 39,400.20/x
  3. Step 3: Cross multiply
    98,579.40x = 147,890.70 × 39,400.20
  4. Step 4: Simplify right side
    98,579.40x = 5,826,923,158.14
  5. Step 5: Solve for x
    x = 5,826,923,158.14/98,579.40
  6. Step 6: Final answer
    x = 59,108.93

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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.