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Finding the Fourth Proportional to 82,758.40, 124,137.60 and 49,580.80

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Solution

The fourth proportional to 82,758.40, 124,137.60 and 49,580.80 is: 74,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,758.40 : 124,137.60 = 49,580.80 : x
  2. Step 2: Convert to fraction form
    82,758.40/124,137.60 = 49,580.80/x
  3. Step 3: Cross multiply
    82,758.40x = 124,137.60 × 49,580.80
  4. Step 4: Simplify right side
    82,758.40x = 6,154,841,518.08
  5. Step 5: Solve for x
    x = 6,154,841,518.08/82,758.40
  6. Step 6: Final answer
    x = 74,371.20

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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.