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Finding the Fourth Proportional to 98,883.80, 136,469.40 and 56,448.68

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Solution

The fourth proportional to 98,883.80, 136,469.40 and 56,448.68 is: 77,904.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,883.80 : 136,469.40 = 56,448.68 : x
  2. Step 2: Convert to fraction form
    98,883.80/136,469.40 = 56,448.68/x
  3. Step 3: Cross multiply
    98,883.80x = 136,469.40 × 56,448.68
  4. Step 4: Simplify right side
    98,883.80x = 7,703,517,490.39
  5. Step 5: Solve for x
    x = 7,703,517,490.39/98,883.80
  6. Step 6: Final answer
    x = 77,904.75

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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.