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Finding the Fourth Proportional to 51,998.16, 78,007.80 and 16,928.40

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Solution

The fourth proportional to 51,998.16, 78,007.80 and 16,928.40 is: 25,396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,998.16 : 78,007.80 = 16,928.40 : x
  2. Step 2: Convert to fraction form
    51,998.16/78,007.80 = 16,928.40/x
  3. Step 3: Cross multiply
    51,998.16x = 78,007.80 × 16,928.40
  4. Step 4: Simplify right side
    51,998.16x = 1,320,547,241.52
  5. Step 5: Solve for x
    x = 1,320,547,241.52/51,998.16
  6. Step 6: Final answer
    x = 25,396.04

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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.