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Finding the Fourth Proportional to 93,412.53, 128,912.13 and 53,132.09

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Solution

The fourth proportional to 93,412.53, 128,912.13 and 53,132.09 is: 73,323.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.53 : 128,912.13 = 53,132.09 : x
  2. Step 2: Convert to fraction form
    93,412.53/128,912.13 = 53,132.09/x
  3. Step 3: Cross multiply
    93,412.53x = 128,912.13 × 53,132.09
  4. Step 4: Simplify right side
    93,412.53x = 6,849,370,248.69
  5. Step 5: Solve for x
    x = 6,849,370,248.69/93,412.53
  6. Step 6: Final answer
    x = 73,323.89

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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.