Home / 79,699.77-109,985.94-47,869.20

Finding the Fourth Proportional to 79,699.77, 109,985.94 and 47,869.20

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Solution

The fourth proportional to 79,699.77, 109,985.94 and 47,869.20 is: 66,059.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,699.77 : 109,985.94 = 47,869.20 : x
  2. Step 2: Convert to fraction form
    79,699.77/109,985.94 = 47,869.20/x
  3. Step 3: Cross multiply
    79,699.77x = 109,985.94 × 47,869.20
  4. Step 4: Simplify right side
    79,699.77x = 5,264,938,959.05
  5. Step 5: Solve for x
    x = 5,264,938,959.05/79,699.77
  6. Step 6: Final answer
    x = 66,059.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.