Home / 85,769.12-128,647.20-23,444.48

Finding the Fourth Proportional to 85,769.12, 128,647.20 and 23,444.48

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Solution

The fourth proportional to 85,769.12, 128,647.20 and 23,444.48 is: 35,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,769.12 : 128,647.20 = 23,444.48 : x
  2. Step 2: Convert to fraction form
    85,769.12/128,647.20 = 23,444.48/x
  3. Step 3: Cross multiply
    85,769.12x = 128,647.20 × 23,444.48
  4. Step 4: Simplify right side
    85,769.12x = 3,016,066,707.46
  5. Step 5: Solve for x
    x = 3,016,066,707.46/85,769.12
  6. Step 6: Final answer
    x = 35,164.95

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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.