Home / 86,030.21-118,779.54-65,851.13

Finding the Fourth Proportional to 86,030.21, 118,779.54 and 65,851.13

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Solution

The fourth proportional to 86,030.21, 118,779.54 and 65,851.13 is: 90,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,030.21 : 118,779.54 = 65,851.13 : x
  2. Step 2: Convert to fraction form
    86,030.21/118,779.54 = 65,851.13/x
  3. Step 3: Cross multiply
    86,030.21x = 118,779.54 × 65,851.13
  4. Step 4: Simplify right side
    86,030.21x = 7,821,766,929.88
  5. Step 5: Solve for x
    x = 7,821,766,929.88/86,030.21
  6. Step 6: Final answer
    x = 90,918.84

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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.