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Finding the Fourth Proportional to 61,282.40, 91,923.60 and 51,440.90

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Solution

The fourth proportional to 61,282.40, 91,923.60 and 51,440.90 is: 77,161.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,282.40 : 91,923.60 = 51,440.90 : x
  2. Step 2: Convert to fraction form
    61,282.40/91,923.60 = 51,440.90/x
  3. Step 3: Cross multiply
    61,282.40x = 91,923.60 × 51,440.90
  4. Step 4: Simplify right side
    61,282.40x = 4,728,632,715.24
  5. Step 5: Solve for x
    x = 4,728,632,715.24/61,282.40
  6. Step 6: Final answer
    x = 77,161.35

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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.