Home / 85,108.77-117,442.85-47,386.53

Finding the Fourth Proportional to 85,108.77, 117,442.85 and 47,386.53

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Solution

The fourth proportional to 85,108.77, 117,442.85 and 47,386.53 is: 65,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,108.77 : 117,442.85 = 47,386.53 : x
  2. Step 2: Convert to fraction form
    85,108.77/117,442.85 = 47,386.53/x
  3. Step 3: Cross multiply
    85,108.77x = 117,442.85 × 47,386.53
  4. Step 4: Simplify right side
    85,108.77x = 5,565,208,897.88
  5. Step 5: Solve for x
    x = 5,565,208,897.88/85,108.77
  6. Step 6: Final answer
    x = 65,389.37

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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.