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Finding the Fourth Proportional to 93,412.79, 128,912.49 and 53,132.36

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Solution

The fourth proportional to 93,412.79, 128,912.49 and 53,132.36 is: 73,324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.79 : 128,912.49 = 53,132.36 : x
  2. Step 2: Convert to fraction form
    93,412.79/128,912.49 = 53,132.36/x
  3. Step 3: Cross multiply
    93,412.79x = 128,912.49 × 53,132.36
  4. Step 4: Simplify right side
    93,412.79x = 6,849,424,827.18
  5. Step 5: Solve for x
    x = 6,849,424,827.18/93,412.79
  6. Step 6: Final answer
    x = 73,324.27

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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.