Home / 78,905.39-108,889.65-47,073.60

Finding the Fourth Proportional to 78,905.39, 108,889.65 and 47,073.60

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Solution

The fourth proportional to 78,905.39, 108,889.65 and 47,073.60 is: 64,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,905.39 : 108,889.65 = 47,073.60 : x
  2. Step 2: Convert to fraction form
    78,905.39/108,889.65 = 47,073.60/x
  3. Step 3: Cross multiply
    78,905.39x = 108,889.65 × 47,073.60
  4. Step 4: Simplify right side
    78,905.39x = 5,125,827,828.24
  5. Step 5: Solve for x
    x = 5,125,827,828.24/78,905.39
  6. Step 6: Final answer
    x = 64,961.70

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1.5x scale

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.