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Finding the Fourth Proportional to 93,423.96, 128,891.32 and 71,920.28

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Solution

The fourth proportional to 93,423.96, 128,891.32 and 71,920.28 is: 99,224.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,423.96 : 128,891.32 = 71,920.28 : x
  2. Step 2: Convert to fraction form
    93,423.96/128,891.32 = 71,920.28/x
  3. Step 3: Cross multiply
    93,423.96x = 128,891.32 × 71,920.28
  4. Step 4: Simplify right side
    93,423.96x = 9,269,899,823.97
  5. Step 5: Solve for x
    x = 9,269,899,823.97/93,423.96
  6. Step 6: Final answer
    x = 99,224.01

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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.