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Finding the Fourth Proportional to 78,783.24, 118,174.80 and 23,379.24

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Solution

The fourth proportional to 78,783.24, 118,174.80 and 23,379.24 is: 35,068.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,783.24 : 118,174.80 = 23,379.24 : x
  2. Step 2: Convert to fraction form
    78,783.24/118,174.80 = 23,379.24/x
  3. Step 3: Cross multiply
    78,783.24x = 118,174.80 × 23,379.24
  4. Step 4: Simplify right side
    78,783.24x = 2,762,837,011.15
  5. Step 5: Solve for x
    x = 2,762,837,011.15/78,783.24
  6. Step 6: Final answer
    x = 35,068.84

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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.