Home / 81,060.81-121,545.59-55,790.03

Finding the Fourth Proportional to 81,060.81, 121,545.59 and 55,790.03

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Solution

The fourth proportional to 81,060.81, 121,545.59 and 55,790.03 is: 83,653.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,060.81 : 121,545.59 = 55,790.03 : x
  2. Step 2: Convert to fraction form
    81,060.81/121,545.59 = 55,790.03/x
  3. Step 3: Cross multiply
    81,060.81x = 121,545.59 × 55,790.03
  4. Step 4: Simplify right side
    81,060.81x = 6,781,031,225.79
  5. Step 5: Solve for x
    x = 6,781,031,225.79/81,060.81
  6. Step 6: Final answer
    x = 83,653.63

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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.