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Finding the Fourth Proportional to 72,653.70, 108,980.55 and 63,905.70

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Solution

The fourth proportional to 72,653.70, 108,980.55 and 63,905.70 is: 95,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,653.70 : 108,980.55 = 63,905.70 : x
  2. Step 2: Convert to fraction form
    72,653.70/108,980.55 = 63,905.70/x
  3. Step 3: Cross multiply
    72,653.70x = 108,980.55 × 63,905.70
  4. Step 4: Simplify right side
    72,653.70x = 6,964,478,334.14
  5. Step 5: Solve for x
    x = 6,964,478,334.14/72,653.70
  6. Step 6: Final answer
    x = 95,858.55

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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.