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Finding the Fourth Proportional to 92,993.40, 128,329.38 and 50,553

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Solution

The fourth proportional to 92,993.40, 128,329.38 and 50,553 is: 69,762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,993.40 : 128,329.38 = 50,553 : x
  2. Step 2: Convert to fraction form
    92,993.40/128,329.38 = 50,553/x
  3. Step 3: Cross multiply
    92,993.40x = 128,329.38 × 50,553
  4. Step 4: Simplify right side
    92,993.40x = 6,487,435,147.14
  5. Step 5: Solve for x
    x = 6,487,435,147.14/92,993.40
  6. Step 6: Final answer
    x = 69,762.32

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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.