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Finding the Fourth Proportional to 103,417.76, 155,040.53 and 40,223.03

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Solution

The fourth proportional to 103,417.76, 155,040.53 and 40,223.03 is: 60,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,417.76 : 155,040.53 = 40,223.03 : x
  2. Step 2: Convert to fraction form
    103,417.76/155,040.53 = 40,223.03/x
  3. Step 3: Cross multiply
    103,417.76x = 155,040.53 × 40,223.03
  4. Step 4: Simplify right side
    103,417.76x = 6,236,200,011.45
  5. Step 5: Solve for x
    x = 6,236,200,011.45/103,417.76
  6. Step 6: Final answer
    x = 60,301.05

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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.