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Finding the Fourth Proportional to 70,449.40, 105,498.80 and 49,290.45

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Solution

The fourth proportional to 70,449.40, 105,498.80 and 49,290.45 is: 73,813.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,449.40 : 105,498.80 = 49,290.45 : x
  2. Step 2: Convert to fraction form
    70,449.40/105,498.80 = 49,290.45/x
  3. Step 3: Cross multiply
    70,449.40x = 105,498.80 × 49,290.45
  4. Step 4: Simplify right side
    70,449.40x = 5,200,083,326.46
  5. Step 5: Solve for x
    x = 5,200,083,326.46/70,449.40
  6. Step 6: Final answer
    x = 73,813.03

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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.