Home / 89,130.37-122,988.21-53,307.31

Finding the Fourth Proportional to 89,130.37, 122,988.21 and 53,307.31

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Solution

The fourth proportional to 89,130.37, 122,988.21 and 53,307.31 is: 73,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,130.37 : 122,988.21 = 53,307.31 : x
  2. Step 2: Convert to fraction form
    89,130.37/122,988.21 = 53,307.31/x
  3. Step 3: Cross multiply
    89,130.37x = 122,988.21 × 53,307.31
  4. Step 4: Simplify right side
    89,130.37x = 6,556,170,636.82
  5. Step 5: Solve for x
    x = 6,556,170,636.82/89,130.37
  6. Step 6: Final answer
    x = 73,557.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.