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Finding the Fourth Proportional to 78,782.87, 118,174.44 and 23,378.87

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Solution

The fourth proportional to 78,782.87, 118,174.44 and 23,378.87 is: 35,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,782.87 : 118,174.44 = 23,378.87 : x
  2. Step 2: Convert to fraction form
    78,782.87/118,174.44 = 23,378.87/x
  3. Step 3: Cross multiply
    78,782.87x = 118,174.44 × 23,378.87
  4. Step 4: Simplify right side
    78,782.87x = 2,762,784,870.08
  5. Step 5: Solve for x
    x = 2,762,784,870.08/78,782.87
  6. Step 6: Final answer
    x = 35,068.35

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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.