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Finding the Fourth Proportional to 93,319.88, 128,783.22 and 50,880.20

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Solution

The fourth proportional to 93,319.88, 128,783.22 and 50,880.20 is: 70,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,319.88 : 128,783.22 = 50,880.20 : x
  2. Step 2: Convert to fraction form
    93,319.88/128,783.22 = 50,880.20/x
  3. Step 3: Cross multiply
    93,319.88x = 128,783.22 × 50,880.20
  4. Step 4: Simplify right side
    93,319.88x = 6,552,515,990.24
  5. Step 5: Solve for x
    x = 6,552,515,990.24/93,319.88
  6. Step 6: Final answer
    x = 70,215.65

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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.