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Finding the Fourth Proportional to 93,385, 128,871.30 and 50,943.70

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Solution

The fourth proportional to 93,385, 128,871.30 and 50,943.70 is: 70,302.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,385 : 128,871.30 = 50,943.70 : x
  2. Step 2: Convert to fraction form
    93,385/128,871.30 = 50,943.70/x
  3. Step 3: Cross multiply
    93,385x = 128,871.30 × 50,943.70
  4. Step 4: Simplify right side
    93,385x = 6,565,180,845.81
  5. Step 5: Solve for x
    x = 6,565,180,845.81/93,385
  6. Step 6: Final answer
    x = 70,302.31

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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.