Home / 81,054.24-121,581.36-34,307.52

Finding the Fourth Proportional to 81,054.24, 121,581.36 and 34,307.52

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Solution

The fourth proportional to 81,054.24, 121,581.36 and 34,307.52 is: 51,461.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,054.24 : 121,581.36 = 34,307.52 : x
  2. Step 2: Convert to fraction form
    81,054.24/121,581.36 = 34,307.52/x
  3. Step 3: Cross multiply
    81,054.24x = 121,581.36 × 34,307.52
  4. Step 4: Simplify right side
    81,054.24x = 4,171,154,939.83
  5. Step 5: Solve for x
    x = 4,171,154,939.83/81,054.24
  6. Step 6: Final answer
    x = 51,461.28

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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.