Home / 78,975.52-109,024-46,715.60

Finding the Fourth Proportional to 78,975.52, 109,024 and 46,715.60

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Solution

The fourth proportional to 78,975.52, 109,024 and 46,715.60 is: 64,489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,975.52 : 109,024 = 46,715.60 : x
  2. Step 2: Convert to fraction form
    78,975.52/109,024 = 46,715.60/x
  3. Step 3: Cross multiply
    78,975.52x = 109,024 × 46,715.60
  4. Step 4: Simplify right side
    78,975.52x = 5,093,121,574.40
  5. Step 5: Solve for x
    x = 5,093,121,574.40/78,975.52
  6. Step 6: Final answer
    x = 64,489.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.