Home / 81,030.06-121,545.09-21,865.73

Finding the Fourth Proportional to 81,030.06, 121,545.09 and 21,865.73

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Solution

The fourth proportional to 81,030.06, 121,545.09 and 21,865.73 is: 32,798.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,030.06 : 121,545.09 = 21,865.73 : x
  2. Step 2: Convert to fraction form
    81,030.06/121,545.09 = 21,865.73/x
  3. Step 3: Cross multiply
    81,030.06x = 121,545.09 × 21,865.73
  4. Step 4: Simplify right side
    81,030.06x = 2,657,671,513.04
  5. Step 5: Solve for x
    x = 2,657,671,513.04/81,030.06
  6. Step 6: Final answer
    x = 32,798.59

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1.5x scale

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.