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Finding the Fourth Proportional to 93,449.18, 128,959.87 and 51,007.71

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Solution

The fourth proportional to 93,449.18, 128,959.87 and 51,007.71 is: 70,390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,449.18 : 128,959.87 = 51,007.71 : x
  2. Step 2: Convert to fraction form
    93,449.18/128,959.87 = 51,007.71/x
  3. Step 3: Cross multiply
    93,449.18x = 128,959.87 × 51,007.71
  4. Step 4: Simplify right side
    93,449.18x = 6,577,947,523.08
  5. Step 5: Solve for x
    x = 6,577,947,523.08/93,449.18
  6. Step 6: Final answer
    x = 70,390.64

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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.