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Finding the Fourth Proportional to 65,569.28, 90,484.61 and 36,886.77

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Solution

The fourth proportional to 65,569.28, 90,484.61 and 36,886.77 is: 50,903.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,569.28 : 90,484.61 = 36,886.77 : x
  2. Step 2: Convert to fraction form
    65,569.28/90,484.61 = 36,886.77/x
  3. Step 3: Cross multiply
    65,569.28x = 90,484.61 × 36,886.77
  4. Step 4: Simplify right side
    65,569.28x = 3,337,684,813.18
  5. Step 5: Solve for x
    x = 3,337,684,813.18/65,569.28
  6. Step 6: Final answer
    x = 50,903.18

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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.