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Finding the Fourth Proportional to 70,510.76, 105,776.04 and 20,594.52

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Solution

The fourth proportional to 70,510.76, 105,776.04 and 20,594.52 is: 30,894.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,510.76 : 105,776.04 = 20,594.52 : x
  2. Step 2: Convert to fraction form
    70,510.76/105,776.04 = 20,594.52/x
  3. Step 3: Cross multiply
    70,510.76x = 105,776.04 × 20,594.52
  4. Step 4: Simplify right side
    70,510.76x = 2,178,406,771.30
  5. Step 5: Solve for x
    x = 2,178,406,771.30/70,510.76
  6. Step 6: Final answer
    x = 30,894.67

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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.