Home / 98,435.20-147,647.64-28,311.76

Finding the Fourth Proportional to 98,435.20, 147,647.64 and 28,311.76

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Solution

The fourth proportional to 98,435.20, 147,647.64 and 28,311.76 is: 42,466.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,435.20 : 147,647.64 = 28,311.76 : x
  2. Step 2: Convert to fraction form
    98,435.20/147,647.64 = 28,311.76/x
  3. Step 3: Cross multiply
    98,435.20x = 147,647.64 × 28,311.76
  4. Step 4: Simplify right side
    98,435.20x = 4,180,164,548.25
  5. Step 5: Solve for x
    x = 4,180,164,548.25/98,435.20
  6. Step 6: Final answer
    x = 42,466.16

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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.