Home / 78,661.10-108,551.79-42,851.14

Finding the Fourth Proportional to 78,661.10, 108,551.79 and 42,851.14

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Solution

The fourth proportional to 78,661.10, 108,551.79 and 42,851.14 is: 59,134.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,661.10 : 108,551.79 = 42,851.14 : x
  2. Step 2: Convert to fraction form
    78,661.10/108,551.79 = 42,851.14/x
  3. Step 3: Cross multiply
    78,661.10x = 108,551.79 × 42,851.14
  4. Step 4: Simplify right side
    78,661.10x = 4,651,567,193.53
  5. Step 5: Solve for x
    x = 4,651,567,193.53/78,661.10
  6. Step 6: Final answer
    x = 59,134.28

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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.