Home / 93,155.20-128,550-50,712.64

Finding the Fourth Proportional to 93,155.20, 128,550 and 50,712.64

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Solution

The fourth proportional to 93,155.20, 128,550 and 50,712.64 is: 69,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,155.20 : 128,550 = 50,712.64 : x
  2. Step 2: Convert to fraction form
    93,155.20/128,550 = 50,712.64/x
  3. Step 3: Cross multiply
    93,155.20x = 128,550 × 50,712.64
  4. Step 4: Simplify right side
    93,155.20x = 6,519,109,872
  5. Step 5: Solve for x
    x = 6,519,109,872/93,155.20
  6. Step 6: Final answer
    x = 69,981.17

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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.