Home / 85,831.48-128,747.04-26,667.64

Finding the Fourth Proportional to 85,831.48, 128,747.04 and 26,667.64

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Solution

The fourth proportional to 85,831.48, 128,747.04 and 26,667.64 is: 40,001.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831.48 : 128,747.04 = 26,667.64 : x
  2. Step 2: Convert to fraction form
    85,831.48/128,747.04 = 26,667.64/x
  3. Step 3: Cross multiply
    85,831.48x = 128,747.04 × 26,667.64
  4. Step 4: Simplify right side
    85,831.48x = 3,433,379,713.79
  5. Step 5: Solve for x
    x = 3,433,379,713.79/85,831.48
  6. Step 6: Final answer
    x = 40,001.40

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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.