Home / 77,070.68-115,419.15-53,311.56

Finding the Fourth Proportional to 77,070.68, 115,419.15 and 53,311.56

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Solution

The fourth proportional to 77,070.68, 115,419.15 and 53,311.56 is: 79,838.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,070.68 : 115,419.15 = 53,311.56 : x
  2. Step 2: Convert to fraction form
    77,070.68/115,419.15 = 53,311.56/x
  3. Step 3: Cross multiply
    77,070.68x = 115,419.15 × 53,311.56
  4. Step 4: Simplify right side
    77,070.68x = 6,153,174,940.37
  5. Step 5: Solve for x
    x = 6,153,174,940.37/77,070.68
  6. Step 6: Final answer
    x = 79,838.08

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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.