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Finding the Fourth Proportional to 61,538.70, 92,308.05 and 45,986.70

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Solution

The fourth proportional to 61,538.70, 92,308.05 and 45,986.70 is: 68,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,538.70 : 92,308.05 = 45,986.70 : x
  2. Step 2: Convert to fraction form
    61,538.70/92,308.05 = 45,986.70/x
  3. Step 3: Cross multiply
    61,538.70x = 92,308.05 × 45,986.70
  4. Step 4: Simplify right side
    61,538.70x = 4,244,942,602.94
  5. Step 5: Solve for x
    x = 4,244,942,602.94/61,538.70
  6. Step 6: Final answer
    x = 68,980.05

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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.