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Finding the Fourth Proportional to 70,326.06, 105,488.78 and 28,773.06

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Solution

The fourth proportional to 70,326.06, 105,488.78 and 28,773.06 is: 43,159.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,326.06 : 105,488.78 = 28,773.06 : x
  2. Step 2: Convert to fraction form
    70,326.06/105,488.78 = 28,773.06/x
  3. Step 3: Cross multiply
    70,326.06x = 105,488.78 × 28,773.06
  4. Step 4: Simplify right side
    70,326.06x = 3,035,234,852.40
  5. Step 5: Solve for x
    x = 3,035,234,852.40/70,326.06
  6. Step 6: Final answer
    x = 43,159.46

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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.