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Finding the Fourth Proportional to 103,643.98, 155,480.55 and 51,053.92

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Solution

The fourth proportional to 103,643.98, 155,480.55 and 51,053.92 is: 76,588.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,643.98 : 155,480.55 = 51,053.92 : x
  2. Step 2: Convert to fraction form
    103,643.98/155,480.55 = 51,053.92/x
  3. Step 3: Cross multiply
    103,643.98x = 155,480.55 × 51,053.92
  4. Step 4: Simplify right side
    103,643.98x = 7,937,891,561.26
  5. Step 5: Solve for x
    x = 7,937,891,561.26/103,643.98
  6. Step 6: Final answer
    x = 76,588.06

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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.