Home / 91,069.47-125,669.75-57,076.74

Finding the Fourth Proportional to 91,069.47, 125,669.75 and 57,076.74

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Solution

The fourth proportional to 91,069.47, 125,669.75 and 57,076.74 is: 78,762.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,069.47 : 125,669.75 = 57,076.74 : x
  2. Step 2: Convert to fraction form
    91,069.47/125,669.75 = 57,076.74/x
  3. Step 3: Cross multiply
    91,069.47x = 125,669.75 × 57,076.74
  4. Step 4: Simplify right side
    91,069.47x = 7,172,819,361.23
  5. Step 5: Solve for x
    x = 7,172,819,361.23/91,069.47
  6. Step 6: Final answer
    x = 78,762.06

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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.