Home / 84,985.40-117,285.62-56,255.59

Finding the Fourth Proportional to 84,985.40, 117,285.62 and 56,255.59

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Solution

The fourth proportional to 84,985.40, 117,285.62 and 56,255.59 is: 77,636.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,985.40 : 117,285.62 = 56,255.59 : x
  2. Step 2: Convert to fraction form
    84,985.40/117,285.62 = 56,255.59/x
  3. Step 3: Cross multiply
    84,985.40x = 117,285.62 × 56,255.59
  4. Step 4: Simplify right side
    84,985.40x = 6,597,971,603.52
  5. Step 5: Solve for x
    x = 6,597,971,603.52/84,985.40
  6. Step 6: Final answer
    x = 77,636.53

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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.