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Finding the Fourth Proportional to 77,365.48, 106,764.18 and 43,831.48

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Solution

The fourth proportional to 77,365.48, 106,764.18 and 43,831.48 is: 60,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,365.48 : 106,764.18 = 43,831.48 : x
  2. Step 2: Convert to fraction form
    77,365.48/106,764.18 = 43,831.48/x
  3. Step 3: Cross multiply
    77,365.48x = 106,764.18 × 43,831.48
  4. Step 4: Simplify right side
    77,365.48x = 4,679,632,020.39
  5. Step 5: Solve for x
    x = 4,679,632,020.39/77,365.48
  6. Step 6: Final answer
    x = 60,487.34

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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.