Home / 85,016,779.63-117,359,357.02-57,155,648.29

Finding the Fourth Proportional to 85,016,779.63, 117,359,357.02 and 57,155,648.29

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Solution

The fourth proportional to 85,016,779.63, 117,359,357.02 and 57,155,648.29 is: 78,899,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,016,779.63 : 117,359,357.02 = 57,155,648.29 : x
  2. Step 2: Convert to fraction form
    85,016,779.63/117,359,357.02 = 57,155,648.29/x
  3. Step 3: Cross multiply
    85,016,779.63x = 117,359,357.02 × 57,155,648.29
  4. Step 4: Simplify right side
    85,016,779.63x = 6,707,750,132,939,375
  5. Step 5: Solve for x
    x = 6,707,750,132,939,375/85,016,779.63
  6. Step 6: Final answer
    x = 78,899,132.18

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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.