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Finding the Fourth Proportional to 70,019.52, 105,029.08 and 17,429

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Solution

The fourth proportional to 70,019.52, 105,029.08 and 17,429 is: 26,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,019.52 : 105,029.08 = 17,429 : x
  2. Step 2: Convert to fraction form
    70,019.52/105,029.08 = 17,429/x
  3. Step 3: Cross multiply
    70,019.52x = 105,029.08 × 17,429
  4. Step 4: Simplify right side
    70,019.52x = 1,830,551,835.32
  5. Step 5: Solve for x
    x = 1,830,551,835.32/70,019.52
  6. Step 6: Final answer
    x = 26,143.45

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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.