Home / 103,617.40-155,419.08-40,425.88

Finding the Fourth Proportional to 103,617.40, 155,419.08 and 40,425.88

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Solution

The fourth proportional to 103,617.40, 155,419.08 and 40,425.88 is: 60,636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.40 : 155,419.08 = 40,425.88 : x
  2. Step 2: Convert to fraction form
    103,617.40/155,419.08 = 40,425.88/x
  3. Step 3: Cross multiply
    103,617.40x = 155,419.08 × 40,425.88
  4. Step 4: Simplify right side
    103,617.40x = 6,282,953,077.79
  5. Step 5: Solve for x
    x = 6,282,953,077.79/103,617.40
  6. Step 6: Final answer
    x = 60,636.08

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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.