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Finding the Fourth Proportional to 89,213.98, 133,778.60 and 51,785.60

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Solution

The fourth proportional to 89,213.98, 133,778.60 and 51,785.60 is: 77,653.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,213.98 : 133,778.60 = 51,785.60 : x
  2. Step 2: Convert to fraction form
    89,213.98/133,778.60 = 51,785.60/x
  3. Step 3: Cross multiply
    89,213.98x = 133,778.60 × 51,785.60
  4. Step 4: Simplify right side
    89,213.98x = 6,927,805,068.16
  5. Step 5: Solve for x
    x = 6,927,805,068.16/89,213.98
  6. Step 6: Final answer
    x = 77,653.81

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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.