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Finding the Fourth Proportional to 93,446.80, 128,959.64 and 51,007.60

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Solution

The fourth proportional to 93,446.80, 128,959.64 and 51,007.60 is: 70,392.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,446.80 : 128,959.64 = 51,007.60 : x
  2. Step 2: Convert to fraction form
    93,446.80/128,959.64 = 51,007.60/x
  3. Step 3: Cross multiply
    93,446.80x = 128,959.64 × 51,007.60
  4. Step 4: Simplify right side
    93,446.80x = 6,577,921,733.26
  5. Step 5: Solve for x
    x = 6,577,921,733.26/93,446.80
  6. Step 6: Final answer
    x = 70,392.16

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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.