Home / 77,700.80-116,537.28-20,775.68

Finding the Fourth Proportional to 77,700.80, 116,537.28 and 20,775.68

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Solution

The fourth proportional to 77,700.80, 116,537.28 and 20,775.68 is: 31,159.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,700.80 : 116,537.28 = 20,775.68 : x
  2. Step 2: Convert to fraction form
    77,700.80/116,537.28 = 20,775.68/x
  3. Step 3: Cross multiply
    77,700.80x = 116,537.28 × 20,775.68
  4. Step 4: Simplify right side
    77,700.80x = 2,421,141,237.35
  5. Step 5: Solve for x
    x = 2,421,141,237.35/77,700.80
  6. Step 6: Final answer
    x = 31,159.80

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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.