Home / 76,503.12-105,573.58-42,511.65

Finding the Fourth Proportional to 76,503.12, 105,573.58 and 42,511.65

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Solution

The fourth proportional to 76,503.12, 105,573.58 and 42,511.65 is: 58,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,503.12 : 105,573.58 = 42,511.65 : x
  2. Step 2: Convert to fraction form
    76,503.12/105,573.58 = 42,511.65/x
  3. Step 3: Cross multiply
    76,503.12x = 105,573.58 × 42,511.65
  4. Step 4: Simplify right side
    76,503.12x = 4,488,107,082.21
  5. Step 5: Solve for x
    x = 4,488,107,082.21/76,503.12
  6. Step 6: Final answer
    x = 58,665.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.