Home / 82,845.60-124,268.40-71,570.40

Finding the Fourth Proportional to 82,845.60, 124,268.40 and 71,570.40

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Solution

The fourth proportional to 82,845.60, 124,268.40 and 71,570.40 is: 107,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,845.60 : 124,268.40 = 71,570.40 : x
  2. Step 2: Convert to fraction form
    82,845.60/124,268.40 = 71,570.40/x
  3. Step 3: Cross multiply
    82,845.60x = 124,268.40 × 71,570.40
  4. Step 4: Simplify right side
    82,845.60x = 8,893,939,095.36
  5. Step 5: Solve for x
    x = 8,893,939,095.36/82,845.60
  6. Step 6: Final answer
    x = 107,355.60

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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.