Home / 77,611.65-116,326.35-76,780.59

Finding the Fourth Proportional to 77,611.65, 116,326.35 and 76,780.59

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Solution

The fourth proportional to 77,611.65, 116,326.35 and 76,780.59 is: 115,080.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,611.65 : 116,326.35 = 76,780.59 : x
  2. Step 2: Convert to fraction form
    77,611.65/116,326.35 = 76,780.59/x
  3. Step 3: Cross multiply
    77,611.65x = 116,326.35 × 76,780.59
  4. Step 4: Simplify right side
    77,611.65x = 8,931,605,785.55
  5. Step 5: Solve for x
    x = 8,931,605,785.55/77,611.65
  6. Step 6: Final answer
    x = 115,080.74

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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.