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Finding the Fourth Proportional to 93,030.12, 128,380.68 and 50,589

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Solution

The fourth proportional to 93,030.12, 128,380.68 and 50,589 is: 69,812.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,030.12 : 128,380.68 = 50,589 : x
  2. Step 2: Convert to fraction form
    93,030.12/128,380.68 = 50,589/x
  3. Step 3: Cross multiply
    93,030.12x = 128,380.68 × 50,589
  4. Step 4: Simplify right side
    93,030.12x = 6,494,650,220.52
  5. Step 5: Solve for x
    x = 6,494,650,220.52/93,030.12
  6. Step 6: Final answer
    x = 69,812.34

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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.