Home / 85,831.64-118,436.34-47,589.31

Finding the Fourth Proportional to 85,831.64, 118,436.34 and 47,589.31

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Solution

The fourth proportional to 85,831.64, 118,436.34 and 47,589.31 is: 65,666.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831.64 : 118,436.34 = 47,589.31 : x
  2. Step 2: Convert to fraction form
    85,831.64/118,436.34 = 47,589.31/x
  3. Step 3: Cross multiply
    85,831.64x = 118,436.34 × 47,589.31
  4. Step 4: Simplify right side
    85,831.64x = 5,636,303,699.53
  5. Step 5: Solve for x
    x = 5,636,303,699.53/85,831.64
  6. Step 6: Final answer
    x = 65,666.97

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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.