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Finding the Fourth Proportional to 70,449.84, 105,657.98 and 28,330.02

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Solution

The fourth proportional to 70,449.84, 105,657.98 and 28,330.02 is: 42,488.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,449.84 : 105,657.98 = 28,330.02 : x
  2. Step 2: Convert to fraction form
    70,449.84/105,657.98 = 28,330.02/x
  3. Step 3: Cross multiply
    70,449.84x = 105,657.98 × 28,330.02
  4. Step 4: Simplify right side
    70,449.84x = 2,993,292,686.56
  5. Step 5: Solve for x
    x = 2,993,292,686.56/70,449.84
  6. Step 6: Final answer
    x = 42,488.28

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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.