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Finding the Fourth Proportional to 77,617.80, 107,062.02 and 63,448.20

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Solution

The fourth proportional to 77,617.80, 107,062.02 and 63,448.20 is: 87,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,617.80 : 107,062.02 = 63,448.20 : x
  2. Step 2: Convert to fraction form
    77,617.80/107,062.02 = 63,448.20/x
  3. Step 3: Cross multiply
    77,617.80x = 107,062.02 × 63,448.20
  4. Step 4: Simplify right side
    77,617.80x = 6,792,892,457.36
  5. Step 5: Solve for x
    x = 6,792,892,457.36/77,617.80
  6. Step 6: Final answer
    x = 87,517.20

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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.