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Finding the Fourth Proportional to 78,609.37, 117,844.38 and 56,366.77

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Solution

The fourth proportional to 78,609.37, 117,844.38 and 56,366.77 is: 84,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,609.37 : 117,844.38 = 56,366.77 : x
  2. Step 2: Convert to fraction form
    78,609.37/117,844.38 = 56,366.77/x
  3. Step 3: Cross multiply
    78,609.37x = 117,844.38 × 56,366.77
  4. Step 4: Simplify right side
    78,609.37x = 6,642,507,063.25
  5. Step 5: Solve for x
    x = 6,642,507,063.25/78,609.37
  6. Step 6: Final answer
    x = 84,500.19

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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.