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Finding the Fourth Proportional to 78,666.59, 117,901.33 and 61,960.63

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Solution

The fourth proportional to 78,666.59, 117,901.33 and 61,960.63 is: 92,863.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,666.59 : 117,901.33 = 61,960.63 : x
  2. Step 2: Convert to fraction form
    78,666.59/117,901.33 = 61,960.63/x
  3. Step 3: Cross multiply
    78,666.59x = 117,901.33 × 61,960.63
  4. Step 4: Simplify right side
    78,666.59x = 7,305,240,684.64
  5. Step 5: Solve for x
    x = 7,305,240,684.64/78,666.59
  6. Step 6: Final answer
    x = 92,863.32

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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.