Home / 93,412.23-128,911.72-53,131.79

Finding the Fourth Proportional to 93,412.23, 128,911.72 and 53,131.79

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Solution

The fourth proportional to 93,412.23, 128,911.72 and 53,131.79 is: 73,323.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.23 : 128,911.72 = 53,131.79 : x
  2. Step 2: Convert to fraction form
    93,412.23/128,911.72 = 53,131.79/x
  3. Step 3: Cross multiply
    93,412.23x = 128,911.72 × 53,131.79
  4. Step 4: Simplify right side
    93,412.23x = 6,849,310,435.58
  5. Step 5: Solve for x
    x = 6,849,310,435.58/93,412.23
  6. Step 6: Final answer
    x = 73,323.49

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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.