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Finding the Fourth Proportional to 93,151.37, 128,549.69 and 50,709.80

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Solution

The fourth proportional to 93,151.37, 128,549.69 and 50,709.80 is: 69,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,151.37 : 128,549.69 = 50,709.80 : x
  2. Step 2: Convert to fraction form
    93,151.37/128,549.69 = 50,709.80/x
  3. Step 3: Cross multiply
    93,151.37x = 128,549.69 × 50,709.80
  4. Step 4: Simplify right side
    93,151.37x = 6,518,728,173.66
  5. Step 5: Solve for x
    x = 6,518,728,173.66/93,151.37
  6. Step 6: Final answer
    x = 69,979.95

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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.