Home / 93,431.39-128,933.52-50,990.23

Finding the Fourth Proportional to 93,431.39, 128,933.52 and 50,990.23

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Solution

The fourth proportional to 93,431.39, 128,933.52 and 50,990.23 is: 70,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,431.39 : 128,933.52 = 50,990.23 : x
  2. Step 2: Convert to fraction form
    93,431.39/128,933.52 = 50,990.23/x
  3. Step 3: Cross multiply
    93,431.39x = 128,933.52 × 50,990.23
  4. Step 4: Simplify right side
    93,431.39x = 6,574,349,194.84
  5. Step 5: Solve for x
    x = 6,574,349,194.84/93,431.39
  6. Step 6: Final answer
    x = 70,365.53

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Double scale
Find fourth proportional to 93,432.39, 128,934.90 and 50,991.23
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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.