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Finding the Fourth Proportional to 69,064.40, 103,673.40 and 42,798.80

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Solution

The fourth proportional to 69,064.40, 103,673.40 and 42,798.80 is: 64,245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,064.40 : 103,673.40 = 42,798.80 : x
  2. Step 2: Convert to fraction form
    69,064.40/103,673.40 = 42,798.80/x
  3. Step 3: Cross multiply
    69,064.40x = 103,673.40 × 42,798.80
  4. Step 4: Simplify right side
    69,064.40x = 4,437,097,111.92
  5. Step 5: Solve for x
    x = 4,437,097,111.92/69,064.40
  6. Step 6: Final answer
    x = 64,245.79

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1.5x scale

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.