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Finding the Fourth Proportional to 70,306.49, 105,460.14 and 28,753.49

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Solution

The fourth proportional to 70,306.49, 105,460.14 and 28,753.49 is: 43,130.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,306.49 : 105,460.14 = 28,753.49 : x
  2. Step 2: Convert to fraction form
    70,306.49/105,460.14 = 28,753.49/x
  3. Step 3: Cross multiply
    70,306.49x = 105,460.14 × 28,753.49
  4. Step 4: Simplify right side
    70,306.49x = 3,032,346,553.59
  5. Step 5: Solve for x
    x = 3,032,346,553.59/70,306.49
  6. Step 6: Final answer
    x = 43,130.40

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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.