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Finding the Fourth Proportional to 61,901.64, 85,476.60 and 39,280.77

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Solution

The fourth proportional to 61,901.64, 85,476.60 and 39,280.77 is: 54,240.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,901.64 : 85,476.60 = 39,280.77 : x
  2. Step 2: Convert to fraction form
    61,901.64/85,476.60 = 39,280.77/x
  3. Step 3: Cross multiply
    61,901.64x = 85,476.60 × 39,280.77
  4. Step 4: Simplify right side
    61,901.64x = 3,357,586,664.98
  5. Step 5: Solve for x
    x = 3,357,586,664.98/61,901.64
  6. Step 6: Final answer
    x = 54,240.67

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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.