Home / 81,065.07-111,871.40-47,076.39

Finding the Fourth Proportional to 81,065.07, 111,871.40 and 47,076.39

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Solution

The fourth proportional to 81,065.07, 111,871.40 and 47,076.39 is: 64,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,065.07 : 111,871.40 = 47,076.39 : x
  2. Step 2: Convert to fraction form
    81,065.07/111,871.40 = 47,076.39/x
  3. Step 3: Cross multiply
    81,065.07x = 111,871.40 × 47,076.39
  4. Step 4: Simplify right side
    81,065.07x = 5,266,501,420.86
  5. Step 5: Solve for x
    x = 5,266,501,420.86/81,065.07
  6. Step 6: Final answer
    x = 64,966.35

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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.