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Finding the Fourth Proportional to 98,477.40, 147,716.10 and 28,363.80

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Solution

The fourth proportional to 98,477.40, 147,716.10 and 28,363.80 is: 42,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,477.40 : 147,716.10 = 28,363.80 : x
  2. Step 2: Convert to fraction form
    98,477.40/147,716.10 = 28,363.80/x
  3. Step 3: Cross multiply
    98,477.40x = 147,716.10 × 28,363.80
  4. Step 4: Simplify right side
    98,477.40x = 4,189,789,917.18
  5. Step 5: Solve for x
    x = 4,189,789,917.18/98,477.40
  6. Step 6: Final answer
    x = 42,545.70

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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.