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Finding the Fourth Proportional to 66,692,812.50, 92,036,081.25 and 36,169,420.50

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Solution

The fourth proportional to 66,692,812.50, 92,036,081.25 and 36,169,420.50 is: 49,913,800.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,692,812.50 : 92,036,081.25 = 36,169,420.50 : x
  2. Step 2: Convert to fraction form
    66,692,812.50/92,036,081.25 = 36,169,420.50/x
  3. Step 3: Cross multiply
    66,692,812.50x = 92,036,081.25 × 36,169,420.50
  4. Step 4: Simplify right side
    66,692,812.50x = 3,328,891,723,903,415.50
  5. Step 5: Solve for x
    x = 3,328,891,723,903,415.50/66,692,812.50
  6. Step 6: Final answer
    x = 49,913,800.29

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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.