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Finding the Fourth Proportional to 145,809.75, 218,714.76 and 40,631.52

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Solution

The fourth proportional to 145,809.75, 218,714.76 and 40,631.52 is: 60,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,809.75 : 218,714.76 = 40,631.52 : x
  2. Step 2: Convert to fraction form
    145,809.75/218,714.76 = 40,631.52/x
  3. Step 3: Cross multiply
    145,809.75x = 218,714.76 × 40,631.52
  4. Step 4: Simplify right side
    145,809.75x = 8,886,713,145.24
  5. Step 5: Solve for x
    x = 8,886,713,145.24/145,809.75
  6. Step 6: Final answer
    x = 60,947.32

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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.