Home / 103,816.81-155,603.75-47,662.35

Finding the Fourth Proportional to 103,816.81, 155,603.75 and 47,662.35

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Solution

The fourth proportional to 103,816.81, 155,603.75 and 47,662.35 is: 71,437.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,816.81 : 155,603.75 = 47,662.35 : x
  2. Step 2: Convert to fraction form
    103,816.81/155,603.75 = 47,662.35/x
  3. Step 3: Cross multiply
    103,816.81x = 155,603.75 × 47,662.35
  4. Step 4: Simplify right side
    103,816.81x = 7,416,440,393.81
  5. Step 5: Solve for x
    x = 7,416,440,393.81/103,816.81
  6. Step 6: Final answer
    x = 71,437.76

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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.