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Finding the Fourth Proportional to 47,200.30, 70,800.45 and 43,263.70

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Solution

The fourth proportional to 47,200.30, 70,800.45 and 43,263.70 is: 64,895.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,200.30 : 70,800.45 = 43,263.70 : x
  2. Step 2: Convert to fraction form
    47,200.30/70,800.45 = 43,263.70/x
  3. Step 3: Cross multiply
    47,200.30x = 70,800.45 × 43,263.70
  4. Step 4: Simplify right side
    47,200.30x = 3,063,089,428.67
  5. Step 5: Solve for x
    x = 3,063,089,428.67/47,200.30
  6. Step 6: Final answer
    x = 64,895.55

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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.