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Finding the Fourth Proportional to 70,139.56, 96,728.48 and 54,828.13

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Solution

The fourth proportional to 70,139.56, 96,728.48 and 54,828.13 is: 75,612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,139.56 : 96,728.48 = 54,828.13 : x
  2. Step 2: Convert to fraction form
    70,139.56/96,728.48 = 54,828.13/x
  3. Step 3: Cross multiply
    70,139.56x = 96,728.48 × 54,828.13
  4. Step 4: Simplify right side
    70,139.56x = 5,303,441,192.50
  5. Step 5: Solve for x
    x = 5,303,441,192.50/70,139.56
  6. Step 6: Final answer
    x = 75,612.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.