Home / 77,711.40-116,538.54-27,778.02

Finding the Fourth Proportional to 77,711.40, 116,538.54 and 27,778.02

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Solution

The fourth proportional to 77,711.40, 116,538.54 and 27,778.02 is: 41,656.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,711.40 : 116,538.54 = 27,778.02 : x
  2. Step 2: Convert to fraction form
    77,711.40/116,538.54 = 27,778.02/x
  3. Step 3: Cross multiply
    77,711.40x = 116,538.54 × 27,778.02
  4. Step 4: Simplify right side
    77,711.40x = 3,237,209,894.89
  5. Step 5: Solve for x
    x = 3,237,209,894.89/77,711.40
  6. Step 6: Final answer
    x = 41,656.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.