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Finding the Fourth Proportional to 68,260.16, 102,390.40 and 19,012.16

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Solution

The fourth proportional to 68,260.16, 102,390.40 and 19,012.16 is: 28,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,260.16 : 102,390.40 = 19,012.16 : x
  2. Step 2: Convert to fraction form
    68,260.16/102,390.40 = 19,012.16/x
  3. Step 3: Cross multiply
    68,260.16x = 102,390.40 × 19,012.16
  4. Step 4: Simplify right side
    68,260.16x = 1,946,662,667.26
  5. Step 5: Solve for x
    x = 1,946,662,667.26/68,260.16
  6. Step 6: Final answer
    x = 28,518.28

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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.