Home / 85,330.48-117,702.84-61,419.28

Finding the Fourth Proportional to 85,330.48, 117,702.84 and 61,419.28

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Solution

The fourth proportional to 85,330.48, 117,702.84 and 61,419.28 is: 84,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,330.48 : 117,702.84 = 61,419.28 : x
  2. Step 2: Convert to fraction form
    85,330.48/117,702.84 = 61,419.28/x
  3. Step 3: Cross multiply
    85,330.48x = 117,702.84 × 61,419.28
  4. Step 4: Simplify right side
    85,330.48x = 7,229,223,686.76
  5. Step 5: Solve for x
    x = 7,229,223,686.76/85,330.48
  6. Step 6: Final answer
    x = 84,720.30

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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.