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Finding the Fourth Proportional to 103,655.98, 155,483.88 and 28,776.07

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Solution

The fourth proportional to 103,655.98, 155,483.88 and 28,776.07 is: 43,164.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,655.98 : 155,483.88 = 28,776.07 : x
  2. Step 2: Convert to fraction form
    103,655.98/155,483.88 = 28,776.07/x
  3. Step 3: Cross multiply
    103,655.98x = 155,483.88 × 28,776.07
  4. Step 4: Simplify right side
    103,655.98x = 4,474,215,014.75
  5. Step 5: Solve for x
    x = 4,474,215,014.75/103,655.98
  6. Step 6: Final answer
    x = 43,164.08

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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.