Home / 93,421.05-128,923.88-53,140.56

Finding the Fourth Proportional to 93,421.05, 128,923.88 and 53,140.56

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Solution

The fourth proportional to 93,421.05, 128,923.88 and 53,140.56 is: 73,335.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,421.05 : 128,923.88 = 53,140.56 : x
  2. Step 2: Convert to fraction form
    93,421.05/128,923.88 = 53,140.56/x
  3. Step 3: Cross multiply
    93,421.05x = 128,923.88 × 53,140.56
  4. Step 4: Simplify right side
    93,421.05x = 6,851,086,914.87
  5. Step 5: Solve for x
    x = 6,851,086,914.87/93,421.05
  6. Step 6: Final answer
    x = 73,335.58

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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.