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Finding the Fourth Proportional to 92,912.63, 128,219.76 and 54,673.65

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Solution

The fourth proportional to 92,912.63, 128,219.76 and 54,673.65 is: 75,449.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,912.63 : 128,219.76 = 54,673.65 : x
  2. Step 2: Convert to fraction form
    92,912.63/128,219.76 = 54,673.65/x
  3. Step 3: Cross multiply
    92,912.63x = 128,219.76 × 54,673.65
  4. Step 4: Simplify right side
    92,912.63x = 7,010,242,281.32
  5. Step 5: Solve for x
    x = 7,010,242,281.32/92,912.63
  6. Step 6: Final answer
    x = 75,449.84

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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.