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Finding the Fourth Proportional to 65,411.77, 90,269.19 and 36,737.64

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Solution

The fourth proportional to 65,411.77, 90,269.19 and 36,737.64 is: 50,698.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,411.77 : 90,269.19 = 36,737.64 : x
  2. Step 2: Convert to fraction form
    65,411.77/90,269.19 = 36,737.64/x
  3. Step 3: Cross multiply
    65,411.77x = 90,269.19 × 36,737.64
  4. Step 4: Simplify right side
    65,411.77x = 3,316,277,005.31
  5. Step 5: Solve for x
    x = 3,316,277,005.31/65,411.77
  6. Step 6: Final answer
    x = 50,698.48

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1.5x scale

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.