Home / 77,000.12-115,307.40-48,834.80

Finding the Fourth Proportional to 77,000.12, 115,307.40 and 48,834.80

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Solution

The fourth proportional to 77,000.12, 115,307.40 and 48,834.80 is: 73,129.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,000.12 : 115,307.40 = 48,834.80 : x
  2. Step 2: Convert to fraction form
    77,000.12/115,307.40 = 48,834.80/x
  3. Step 3: Cross multiply
    77,000.12x = 115,307.40 × 48,834.80
  4. Step 4: Simplify right side
    77,000.12x = 5,631,013,817.52
  5. Step 5: Solve for x
    x = 5,631,013,817.52/77,000.12
  6. Step 6: Final answer
    x = 73,129.94

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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.