Home / 65,470.43-90,346.90-40,019.55

Finding the Fourth Proportional to 65,470.43, 90,346.90 and 40,019.55

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Solution

The fourth proportional to 65,470.43, 90,346.90 and 40,019.55 is: 55,225.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,470.43 : 90,346.90 = 40,019.55 : x
  2. Step 2: Convert to fraction form
    65,470.43/90,346.90 = 40,019.55/x
  3. Step 3: Cross multiply
    65,470.43x = 90,346.90 × 40,019.55
  4. Step 4: Simplify right side
    65,470.43x = 3,615,642,281.90
  5. Step 5: Solve for x
    x = 3,615,642,281.90/65,470.43
  6. Step 6: Final answer
    x = 55,225.58

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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.