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Finding the Fourth Proportional to 40,698.90, 61,059.15 and 14,400.90

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Solution

The fourth proportional to 40,698.90, 61,059.15 and 14,400.90 is: 21,605.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,698.90 : 61,059.15 = 14,400.90 : x
  2. Step 2: Convert to fraction form
    40,698.90/61,059.15 = 14,400.90/x
  3. Step 3: Cross multiply
    40,698.90x = 61,059.15 × 14,400.90
  4. Step 4: Simplify right side
    40,698.90x = 879,306,713.24
  5. Step 5: Solve for x
    x = 879,306,713.24/40,698.90
  6. Step 6: Final answer
    x = 21,605.17

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1.5x scale

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.