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Finding the Fourth Proportional to 92,709.18, 139,069.15 and 35,783.40

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Solution

The fourth proportional to 92,709.18, 139,069.15 and 35,783.40 is: 53,677.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,709.18 : 139,069.15 = 35,783.40 : x
  2. Step 2: Convert to fraction form
    92,709.18/139,069.15 = 35,783.40/x
  3. Step 3: Cross multiply
    92,709.18x = 139,069.15 × 35,783.40
  4. Step 4: Simplify right side
    92,709.18x = 4,976,366,147.85
  5. Step 5: Solve for x
    x = 4,976,366,147.85/92,709.18
  6. Step 6: Final answer
    x = 53,677.17

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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.