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Finding the Fourth Proportional to 89,088.70, 133,490.89 and 65,285.93

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Solution

The fourth proportional to 89,088.70, 133,490.89 and 65,285.93 is: 97,824.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,088.70 : 133,490.89 = 65,285.93 : x
  2. Step 2: Convert to fraction form
    89,088.70/133,490.89 = 65,285.93/x
  3. Step 3: Cross multiply
    89,088.70x = 133,490.89 × 65,285.93
  4. Step 4: Simplify right side
    89,088.70x = 8,715,076,573.75
  5. Step 5: Solve for x
    x = 8,715,076,573.75/89,088.70
  6. Step 6: Final answer
    x = 97,824.72

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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.