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Finding the Fourth Proportional to 70,534.80, 105,831.88 and 43,903.06

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Solution

The fourth proportional to 70,534.80, 105,831.88 and 43,903.06 is: 65,873.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,534.80 : 105,831.88 = 43,903.06 : x
  2. Step 2: Convert to fraction form
    70,534.80/105,831.88 = 43,903.06/x
  3. Step 3: Cross multiply
    70,534.80x = 105,831.88 × 43,903.06
  4. Step 4: Simplify right side
    70,534.80x = 4,646,343,317.77
  5. Step 5: Solve for x
    x = 4,646,343,317.77/70,534.80
  6. Step 6: Final answer
    x = 65,873.06

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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.