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Finding the Fourth Proportional to 56,831.90, 85,321.65 and 43,693.49

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Solution

The fourth proportional to 56,831.90, 85,321.65 and 43,693.49 is: 65,596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,831.90 : 85,321.65 = 43,693.49 : x
  2. Step 2: Convert to fraction form
    56,831.90/85,321.65 = 43,693.49/x
  3. Step 3: Cross multiply
    56,831.90x = 85,321.65 × 43,693.49
  4. Step 4: Simplify right side
    56,831.90x = 3,728,001,038.21
  5. Step 5: Solve for x
    x = 3,728,001,038.21/56,831.90
  6. Step 6: Final answer
    x = 65,596.99

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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.