Home / 105,422.43-145,486.40-57,674.67

Finding the Fourth Proportional to 105,422.43, 145,486.40 and 57,674.67

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Solution

The fourth proportional to 105,422.43, 145,486.40 and 57,674.67 is: 79,592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,422.43 : 145,486.40 = 57,674.67 : x
  2. Step 2: Convert to fraction form
    105,422.43/145,486.40 = 57,674.67/x
  3. Step 3: Cross multiply
    105,422.43x = 145,486.40 × 57,674.67
  4. Step 4: Simplify right side
    105,422.43x = 8,390,879,673.68
  5. Step 5: Solve for x
    x = 8,390,879,673.68/105,422.43
  6. Step 6: Final answer
    x = 79,592.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.