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Finding the Fourth Proportional to 78,892.88, 118,336.08 and 43,810.16

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Solution

The fourth proportional to 78,892.88, 118,336.08 and 43,810.16 is: 65,713.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.88 : 118,336.08 = 43,810.16 : x
  2. Step 2: Convert to fraction form
    78,892.88/118,336.08 = 43,810.16/x
  3. Step 3: Cross multiply
    78,892.88x = 118,336.08 × 43,810.16
  4. Step 4: Simplify right side
    78,892.88x = 5,184,322,598.57
  5. Step 5: Solve for x
    x = 5,184,322,598.57/78,892.88
  6. Step 6: Final answer
    x = 65,713.44

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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.