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Finding the Fourth Proportional to 70,373.88, 105,551.10 and 17,780.18

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Solution

The fourth proportional to 70,373.88, 105,551.10 and 17,780.18 is: 26,667.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.88 : 105,551.10 = 17,780.18 : x
  2. Step 2: Convert to fraction form
    70,373.88/105,551.10 = 17,780.18/x
  3. Step 3: Cross multiply
    70,373.88x = 105,551.10 × 17,780.18
  4. Step 4: Simplify right side
    70,373.88x = 1,876,717,029.44
  5. Step 5: Solve for x
    x = 1,876,717,029.44/70,373.88
  6. Step 6: Final answer
    x = 26,667.81

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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.