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Finding the Fourth Proportional to 70,373.60, 105,470.16 and 28,771.04

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Solution

The fourth proportional to 70,373.60, 105,470.16 and 28,771.04 is: 43,119.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,373.60 : 105,470.16 = 28,771.04 : x
  2. Step 2: Convert to fraction form
    70,373.60/105,470.16 = 28,771.04/x
  3. Step 3: Cross multiply
    70,373.60x = 105,470.16 × 28,771.04
  4. Step 4: Simplify right side
    70,373.60x = 3,034,486,192.17
  5. Step 5: Solve for x
    x = 3,034,486,192.17/70,373.60
  6. Step 6: Final answer
    x = 43,119.67

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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.