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Finding the Fourth Proportional to 77,960.94, 116,783.54 and 61,242.70

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Solution

The fourth proportional to 77,960.94, 116,783.54 and 61,242.70 is: 91,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,960.94 : 116,783.54 = 61,242.70 : x
  2. Step 2: Convert to fraction form
    77,960.94/116,783.54 = 61,242.70/x
  3. Step 3: Cross multiply
    77,960.94x = 116,783.54 × 61,242.70
  4. Step 4: Simplify right side
    77,960.94x = 7,152,139,305.16
  5. Step 5: Solve for x
    x = 7,152,139,305.16/77,960.94
  6. Step 6: Final answer
    x = 91,740.03

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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.