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Finding the Fourth Proportional to 49,430.60, 74,145.90 and 48,912.20

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Solution

The fourth proportional to 49,430.60, 74,145.90 and 48,912.20 is: 73,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,430.60 : 74,145.90 = 48,912.20 : x
  2. Step 2: Convert to fraction form
    49,430.60/74,145.90 = 48,912.20/x
  3. Step 3: Cross multiply
    49,430.60x = 74,145.90 × 48,912.20
  4. Step 4: Simplify right side
    49,430.60x = 3,626,639,089.98
  5. Step 5: Solve for x
    x = 3,626,639,089.98/49,430.60
  6. Step 6: Final answer
    x = 73,368.30

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1.5x scale

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.