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Finding the Fourth Proportional to 93,308.01, 128,728.49 and 57,435.74

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Solution

The fourth proportional to 93,308.01, 128,728.49 and 57,435.74 is: 79,238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,308.01 : 128,728.49 = 57,435.74 : x
  2. Step 2: Convert to fraction form
    93,308.01/128,728.49 = 57,435.74/x
  3. Step 3: Cross multiply
    93,308.01x = 128,728.49 × 57,435.74
  4. Step 4: Simplify right side
    93,308.01x = 7,393,616,082.23
  5. Step 5: Solve for x
    x = 7,393,616,082.23/93,308.01
  6. Step 6: Final answer
    x = 79,238.81

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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.