Home / 85,016,778.50-117,359,355.47-57,155,647.14

Finding the Fourth Proportional to 85,016,778.50, 117,359,355.47 and 57,155,647.14

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Solution

The fourth proportional to 85,016,778.50, 117,359,355.47 and 57,155,647.14 is: 78,899,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,016,778.50 : 117,359,355.47 = 57,155,647.14 : x
  2. Step 2: Convert to fraction form
    85,016,778.50/117,359,355.47 = 57,155,647.14/x
  3. Step 3: Cross multiply
    85,016,778.50x = 117,359,355.47 × 57,155,647.14
  4. Step 4: Simplify right side
    85,016,778.50x = 6,707,749,909,535,371
  5. Step 5: Solve for x
    x = 6,707,749,909,535,371/85,016,778.50
  6. Step 6: Final answer
    x = 78,899,130.59

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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.