Home / 70,281.81-105,349.28-30,805.65

Finding the Fourth Proportional to 70,281.81, 105,349.28 and 30,805.65

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Solution

The fourth proportional to 70,281.81, 105,349.28 and 30,805.65 is: 46,176.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.81 : 105,349.28 = 30,805.65 : x
  2. Step 2: Convert to fraction form
    70,281.81/105,349.28 = 30,805.65/x
  3. Step 3: Cross multiply
    70,281.81x = 105,349.28 × 30,805.65
  4. Step 4: Simplify right side
    70,281.81x = 3,245,352,893.40
  5. Step 5: Solve for x
    x = 3,245,352,893.40/70,281.81
  6. Step 6: Final answer
    x = 46,176.29

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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.