Home / 81,577.13-122,365.69-28,988.69

Finding the Fourth Proportional to 81,577.13, 122,365.69 and 28,988.69

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Solution

The fourth proportional to 81,577.13, 122,365.69 and 28,988.69 is: 43,483.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,577.13 : 122,365.69 = 28,988.69 : x
  2. Step 2: Convert to fraction form
    81,577.13/122,365.69 = 28,988.69/x
  3. Step 3: Cross multiply
    81,577.13x = 122,365.69 × 28,988.69
  4. Step 4: Simplify right side
    81,577.13x = 3,547,220,369.75
  5. Step 5: Solve for x
    x = 3,547,220,369.75/81,577.13
  6. Step 6: Final answer
    x = 43,483.03

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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.