Home / 91,342.77-136,669.64-53,923.20

Finding the Fourth Proportional to 91,342.77, 136,669.64 and 53,923.20

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Solution

The fourth proportional to 91,342.77, 136,669.64 and 53,923.20 is: 80,681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,342.77 : 136,669.64 = 53,923.20 : x
  2. Step 2: Convert to fraction form
    91,342.77/136,669.64 = 53,923.20/x
  3. Step 3: Cross multiply
    91,342.77x = 136,669.64 × 53,923.20
  4. Step 4: Simplify right side
    91,342.77x = 7,369,664,062.03
  5. Step 5: Solve for x
    x = 7,369,664,062.03/91,342.77
  6. Step 6: Final answer
    x = 80,681.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.