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Finding the Fourth Proportional to 98,800.91, 147,947.63 and 54,378.08

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Solution

The fourth proportional to 98,800.91, 147,947.63 and 54,378.08 is: 81,427.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,800.91 : 147,947.63 = 54,378.08 : x
  2. Step 2: Convert to fraction form
    98,800.91/147,947.63 = 54,378.08/x
  3. Step 3: Cross multiply
    98,800.91x = 147,947.63 × 54,378.08
  4. Step 4: Simplify right side
    98,800.91x = 8,045,107,048.32
  5. Step 5: Solve for x
    x = 8,045,107,048.32/98,800.91
  6. Step 6: Final answer
    x = 81,427.46

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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.