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Finding the Fourth Proportional to 70,039, 105,059.40 and 23,291.88

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Solution

The fourth proportional to 70,039, 105,059.40 and 23,291.88 is: 34,938.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,039 : 105,059.40 = 23,291.88 : x
  2. Step 2: Convert to fraction form
    70,039/105,059.40 = 23,291.88/x
  3. Step 3: Cross multiply
    70,039x = 105,059.40 × 23,291.88
  4. Step 4: Simplify right side
    70,039x = 2,447,030,937.67
  5. Step 5: Solve for x
    x = 2,447,030,937.67/70,039
  6. Step 6: Final answer
    x = 34,938.12

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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.