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Finding the Fourth Proportional to 70,373.70, 105,548.67 and 19,761.12

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Solution

The fourth proportional to 70,373.70, 105,548.67 and 19,761.12 is: 29,638.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.70 : 105,548.67 = 19,761.12 : x
  2. Step 2: Convert to fraction form
    70,373.70/105,548.67 = 19,761.12/x
  3. Step 3: Cross multiply
    70,373.70x = 105,548.67 × 19,761.12
  4. Step 4: Simplify right side
    70,373.70x = 2,085,759,933.71
  5. Step 5: Solve for x
    x = 2,085,759,933.71/70,373.70
  6. Step 6: Final answer
    x = 29,638.34

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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.