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Finding the Fourth Proportional to 92,880.88, 128,174.49 and 50,439.72

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Solution

The fourth proportional to 92,880.88, 128,174.49 and 50,439.72 is: 69,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,880.88 : 128,174.49 = 50,439.72 : x
  2. Step 2: Convert to fraction form
    92,880.88/128,174.49 = 50,439.72/x
  3. Step 3: Cross multiply
    92,880.88x = 128,174.49 × 50,439.72
  4. Step 4: Simplify right side
    92,880.88x = 6,465,085,386.74
  5. Step 5: Solve for x
    x = 6,465,085,386.74/92,880.88
  6. Step 6: Final answer
    x = 69,606.20

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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.