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Finding the Fourth Proportional to 76,901.98, 115,144.52 and 39,888.22

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Solution

The fourth proportional to 76,901.98, 115,144.52 and 39,888.22 is: 59,724.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,901.98 : 115,144.52 = 39,888.22 : x
  2. Step 2: Convert to fraction form
    76,901.98/115,144.52 = 39,888.22/x
  3. Step 3: Cross multiply
    76,901.98x = 115,144.52 × 39,888.22
  4. Step 4: Simplify right side
    76,901.98x = 4,592,909,369.83
  5. Step 5: Solve for x
    x = 4,592,909,369.83/76,901.98
  6. Step 6: Final answer
    x = 59,724.21

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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.