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Finding the Fourth Proportional to 69,970.55, 104,955.30 and 20,050.69

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Solution

The fourth proportional to 69,970.55, 104,955.30 and 20,050.69 is: 30,075.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,970.55 : 104,955.30 = 20,050.69 : x
  2. Step 2: Convert to fraction form
    69,970.55/104,955.30 = 20,050.69/x
  3. Step 3: Cross multiply
    69,970.55x = 104,955.30 × 20,050.69
  4. Step 4: Simplify right side
    69,970.55x = 2,104,426,184.16
  5. Step 5: Solve for x
    x = 2,104,426,184.16/69,970.55
  6. Step 6: Final answer
    x = 30,075.88

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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.