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Finding the Fourth Proportional to 93,268.48, 128,733.44 and 72,015.36

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Solution

The fourth proportional to 93,268.48, 128,733.44 and 72,015.36 is: 99,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,268.48 : 128,733.44 = 72,015.36 : x
  2. Step 2: Convert to fraction form
    93,268.48/128,733.44 = 72,015.36/x
  3. Step 3: Cross multiply
    93,268.48x = 128,733.44 × 72,015.36
  4. Step 4: Simplify right side
    93,268.48x = 9,270,785,025.64
  5. Step 5: Solve for x
    x = 9,270,785,025.64/93,268.48
  6. Step 6: Final answer
    x = 99,398.91

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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.