Home / 82,666.40-123,999.60-57,783.20

Finding the Fourth Proportional to 82,666.40, 123,999.60 and 57,783.20

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Solution

The fourth proportional to 82,666.40, 123,999.60 and 57,783.20 is: 86,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,666.40 : 123,999.60 = 57,783.20 : x
  2. Step 2: Convert to fraction form
    82,666.40/123,999.60 = 57,783.20/x
  3. Step 3: Cross multiply
    82,666.40x = 123,999.60 × 57,783.20
  4. Step 4: Simplify right side
    82,666.40x = 7,165,093,686.72
  5. Step 5: Solve for x
    x = 7,165,093,686.72/82,666.40
  6. Step 6: Final answer
    x = 86,674.80

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1.5x scale

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.