Home / 98,579.10-147,929.40-39,408.60

Finding the Fourth Proportional to 98,579.10, 147,929.40 and 39,408.60

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Solution

The fourth proportional to 98,579.10, 147,929.40 and 39,408.60 is: 59,137.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,579.10 : 147,929.40 = 39,408.60 : x
  2. Step 2: Convert to fraction form
    98,579.10/147,929.40 = 39,408.60/x
  3. Step 3: Cross multiply
    98,579.10x = 147,929.40 × 39,408.60
  4. Step 4: Simplify right side
    98,579.10x = 5,829,690,552.84
  5. Step 5: Solve for x
    x = 5,829,690,552.84/98,579.10
  6. Step 6: Final answer
    x = 59,137.19

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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.