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Finding the Fourth Proportional to 70,046.55, 96,663.78 and 39,831.89

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Solution

The fourth proportional to 70,046.55, 96,663.78 and 39,831.89 is: 54,967.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,046.55 : 96,663.78 = 39,831.89 : x
  2. Step 2: Convert to fraction form
    70,046.55/96,663.78 = 39,831.89/x
  3. Step 3: Cross multiply
    70,046.55x = 96,663.78 × 39,831.89
  4. Step 4: Simplify right side
    70,046.55x = 3,850,300,568.63
  5. Step 5: Solve for x
    x = 3,850,300,568.63/70,046.55
  6. Step 6: Final answer
    x = 54,967.74

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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.