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Finding the Fourth Proportional to 52,970.65, 79,455.90 and 13,527.79

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Solution

The fourth proportional to 52,970.65, 79,455.90 and 13,527.79 is: 20,291.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,970.65 : 79,455.90 = 13,527.79 : x
  2. Step 2: Convert to fraction form
    52,970.65/79,455.90 = 13,527.79/x
  3. Step 3: Cross multiply
    52,970.65x = 79,455.90 × 13,527.79
  4. Step 4: Simplify right side
    52,970.65x = 1,074,862,729.46
  5. Step 5: Solve for x
    x = 1,074,862,729.46/52,970.65
  6. Step 6: Final answer
    x = 20,291.67

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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.