Home / 77,729.16-116,700.30-40,315.08

Finding the Fourth Proportional to 77,729.16, 116,700.30 and 40,315.08

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Solution

The fourth proportional to 77,729.16, 116,700.30 and 40,315.08 is: 60,527.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,729.16 : 116,700.30 = 40,315.08 : x
  2. Step 2: Convert to fraction form
    77,729.16/116,700.30 = 40,315.08/x
  3. Step 3: Cross multiply
    77,729.16x = 116,700.30 × 40,315.08
  4. Step 4: Simplify right side
    77,729.16x = 4,704,781,930.52
  5. Step 5: Solve for x
    x = 4,704,781,930.52/77,729.16
  6. Step 6: Final answer
    x = 60,527.89

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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.