Home / 82,815.60-124,223.40-70,892.40

Finding the Fourth Proportional to 82,815.60, 124,223.40 and 70,892.40

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Solution

The fourth proportional to 82,815.60, 124,223.40 and 70,892.40 is: 106,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,815.60 : 124,223.40 = 70,892.40 : x
  2. Step 2: Convert to fraction form
    82,815.60/124,223.40 = 70,892.40/x
  3. Step 3: Cross multiply
    82,815.60x = 124,223.40 × 70,892.40
  4. Step 4: Simplify right side
    82,815.60x = 8,806,494,962.16
  5. Step 5: Solve for x
    x = 8,806,494,962.16/82,815.60
  6. Step 6: Final answer
    x = 106,338.60

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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.