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Finding the Fourth Proportional to 115,240.84, 172,860.84 and 45,070.72

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Solution

The fourth proportional to 115,240.84, 172,860.84 and 45,070.72 is: 67,605.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,240.84 : 172,860.84 = 45,070.72 : x
  2. Step 2: Convert to fraction form
    115,240.84/172,860.84 = 45,070.72/x
  3. Step 3: Cross multiply
    115,240.84x = 172,860.84 × 45,070.72
  4. Step 4: Simplify right side
    115,240.84x = 7,790,962,518.60
  5. Step 5: Solve for x
    x = 7,790,962,518.60/115,240.84
  6. Step 6: Final answer
    x = 67,605.92

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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.