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Finding the Fourth Proportional to 70,303.90, 105,462.61 and 19,702.95

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Solution

The fourth proportional to 70,303.90, 105,462.61 and 19,702.95 is: 29,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,303.90 : 105,462.61 = 19,702.95 : x
  2. Step 2: Convert to fraction form
    70,303.90/105,462.61 = 19,702.95/x
  3. Step 3: Cross multiply
    70,303.90x = 105,462.61 × 19,702.95
  4. Step 4: Simplify right side
    70,303.90x = 2,077,924,086.96
  5. Step 5: Solve for x
    x = 2,077,924,086.96/70,303.90
  6. Step 6: Final answer
    x = 29,556.31

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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.