Home / 84,728.16-126,986.40-53,572.32

Finding the Fourth Proportional to 84,728.16, 126,986.40 and 53,572.32

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Solution

The fourth proportional to 84,728.16, 126,986.40 and 53,572.32 is: 80,291.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,728.16 : 126,986.40 = 53,572.32 : x
  2. Step 2: Convert to fraction form
    84,728.16/126,986.40 = 53,572.32/x
  3. Step 3: Cross multiply
    84,728.16x = 126,986.40 × 53,572.32
  4. Step 4: Simplify right side
    84,728.16x = 6,802,956,056.45
  5. Step 5: Solve for x
    x = 6,802,956,056.45/84,728.16
  6. Step 6: Final answer
    x = 80,291.56

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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.