Home / 65,831.04-90,855.09-50,711.58

Finding the Fourth Proportional to 65,831.04, 90,855.09 and 50,711.58

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Solution

The fourth proportional to 65,831.04, 90,855.09 and 50,711.58 is: 69,988.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,831.04 : 90,855.09 = 50,711.58 : x
  2. Step 2: Convert to fraction form
    65,831.04/90,855.09 = 50,711.58/x
  3. Step 3: Cross multiply
    65,831.04x = 90,855.09 × 50,711.58
  4. Step 4: Simplify right side
    65,831.04x = 4,607,405,164.94
  5. Step 5: Solve for x
    x = 4,607,405,164.94/65,831.04
  6. Step 6: Final answer
    x = 69,988.34

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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.