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Finding the Fourth Proportional to 86,852.93, 130,289.90 and 30,681.54

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Solution

The fourth proportional to 86,852.93, 130,289.90 and 30,681.54 is: 46,026.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,852.93 : 130,289.90 = 30,681.54 : x
  2. Step 2: Convert to fraction form
    86,852.93/130,289.90 = 30,681.54/x
  3. Step 3: Cross multiply
    86,852.93x = 130,289.90 × 30,681.54
  4. Step 4: Simplify right side
    86,852.93x = 3,997,494,625.04
  5. Step 5: Solve for x
    x = 3,997,494,625.04/86,852.93
  6. Step 6: Final answer
    x = 46,026.02

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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.