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Finding the Fourth Proportional to 77,242.40, 108,450.40 and 77,242.40

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Solution

The fourth proportional to 77,242.40, 108,450.40 and 77,242.40 is: 108,450.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,242.40 : 108,450.40 = 77,242.40 : x
  2. Step 2: Convert to fraction form
    77,242.40/108,450.40 = 77,242.40/x
  3. Step 3: Cross multiply
    77,242.40x = 108,450.40 × 77,242.40
  4. Step 4: Simplify right side
    77,242.40x = 8,376,969,176.96
  5. Step 5: Solve for x
    x = 8,376,969,176.96/77,242.40
  6. Step 6: Final answer
    x = 108,450.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.