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Finding the Fourth Proportional to 70,012.95, 105,019.80 and 17,422.44

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Solution

The fourth proportional to 70,012.95, 105,019.80 and 17,422.44 is: 26,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,012.95 : 105,019.80 = 17,422.44 : x
  2. Step 2: Convert to fraction form
    70,012.95/105,019.80 = 17,422.44/x
  3. Step 3: Cross multiply
    70,012.95x = 105,019.80 × 17,422.44
  4. Step 4: Simplify right side
    70,012.95x = 1,829,701,164.31
  5. Step 5: Solve for x
    x = 1,829,701,164.31/70,012.95
  6. Step 6: Final answer
    x = 26,133.75

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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.