Home / 81,330.30-121,995.45-56,447.10

Finding the Fourth Proportional to 81,330.30, 121,995.45 and 56,447.10

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Solution

The fourth proportional to 81,330.30, 121,995.45 and 56,447.10 is: 84,670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.30 : 121,995.45 = 56,447.10 : x
  2. Step 2: Convert to fraction form
    81,330.30/121,995.45 = 56,447.10/x
  3. Step 3: Cross multiply
    81,330.30x = 121,995.45 × 56,447.10
  4. Step 4: Simplify right side
    81,330.30x = 6,886,289,365.70
  5. Step 5: Solve for x
    x = 6,886,289,365.70/81,330.30
  6. Step 6: Final answer
    x = 84,670.65

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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.