Home / 68,538.56-102,574.08-57,457.76

Finding the Fourth Proportional to 68,538.56, 102,574.08 and 57,457.76

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Solution

The fourth proportional to 68,538.56, 102,574.08 and 57,457.76 is: 85,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,538.56 : 102,574.08 = 57,457.76 : x
  2. Step 2: Convert to fraction form
    68,538.56/102,574.08 = 57,457.76/x
  3. Step 3: Cross multiply
    68,538.56x = 102,574.08 × 57,457.76
  4. Step 4: Simplify right side
    68,538.56x = 5,893,676,870.86
  5. Step 5: Solve for x
    x = 5,893,676,870.86/68,538.56
  6. Step 6: Final answer
    x = 85,990.67

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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.