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Finding the Fourth Proportional to 92,980.62, 128,312.49 and 50,539.02

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Solution

The fourth proportional to 92,980.62, 128,312.49 and 50,539.02 is: 69,743.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,980.62 : 128,312.49 = 50,539.02 : x
  2. Step 2: Convert to fraction form
    92,980.62/128,312.49 = 50,539.02/x
  3. Step 3: Cross multiply
    92,980.62x = 128,312.49 × 50,539.02
  4. Step 4: Simplify right side
    92,980.62x = 6,484,787,498.36
  5. Step 5: Solve for x
    x = 6,484,787,498.36/92,980.62
  6. Step 6: Final answer
    x = 69,743.43

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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.