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Finding the Fourth Proportional to 70,374.88, 105,537.42 and 20,444.59

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Solution

The fourth proportional to 70,374.88, 105,537.42 and 20,444.59 is: 30,659.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,374.88 : 105,537.42 = 20,444.59 : x
  2. Step 2: Convert to fraction form
    70,374.88/105,537.42 = 20,444.59/x
  3. Step 3: Cross multiply
    70,374.88x = 105,537.42 × 20,444.59
  4. Step 4: Simplify right side
    70,374.88x = 2,157,669,017.71
  5. Step 5: Solve for x
    x = 2,157,669,017.71/70,374.88
  6. Step 6: Final answer
    x = 30,659.65

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1.5x scale

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.