Home / 92,970.36-128,296.92-52,131.78

Finding the Fourth Proportional to 92,970.36, 128,296.92 and 52,131.78

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Solution

The fourth proportional to 92,970.36, 128,296.92 and 52,131.78 is: 71,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,970.36 : 128,296.92 = 52,131.78 : x
  2. Step 2: Convert to fraction form
    92,970.36/128,296.92 = 52,131.78/x
  3. Step 3: Cross multiply
    92,970.36x = 128,296.92 × 52,131.78
  4. Step 4: Simplify right side
    92,970.36x = 6,688,346,808.12
  5. Step 5: Solve for x
    x = 6,688,346,808.12/92,970.36
  6. Step 6: Final answer
    x = 71,940.64

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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.