Home / 81,925.40-122,888.10-56,912.60

Finding the Fourth Proportional to 81,925.40, 122,888.10 and 56,912.60

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Solution

The fourth proportional to 81,925.40, 122,888.10 and 56,912.60 is: 85,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,925.40 : 122,888.10 = 56,912.60 : x
  2. Step 2: Convert to fraction form
    81,925.40/122,888.10 = 56,912.60/x
  3. Step 3: Cross multiply
    81,925.40x = 122,888.10 × 56,912.60
  4. Step 4: Simplify right side
    81,925.40x = 6,993,881,280.06
  5. Step 5: Solve for x
    x = 6,993,881,280.06/81,925.40
  6. Step 6: Final answer
    x = 85,368.90

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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.