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Finding the Fourth Proportional to 72,680.32, 100,304.76 and 42,063.76

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Solution

The fourth proportional to 72,680.32, 100,304.76 and 42,063.76 is: 58,051.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,680.32 : 100,304.76 = 42,063.76 : x
  2. Step 2: Convert to fraction form
    72,680.32/100,304.76 = 42,063.76/x
  3. Step 3: Cross multiply
    72,680.32x = 100,304.76 × 42,063.76
  4. Step 4: Simplify right side
    72,680.32x = 4,219,195,351.50
  5. Step 5: Solve for x
    x = 4,219,195,351.50/72,680.32
  6. Step 6: Final answer
    x = 58,051.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.