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Finding the Fourth Proportional to 98,858.82, 136,436.22 and 56,424.54

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Solution

The fourth proportional to 98,858.82, 136,436.22 and 56,424.54 is: 77,872.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,858.82 : 136,436.22 = 56,424.54 : x
  2. Step 2: Convert to fraction form
    98,858.82/136,436.22 = 56,424.54/x
  3. Step 3: Cross multiply
    98,858.82x = 136,436.22 × 56,424.54
  4. Step 4: Simplify right side
    98,858.82x = 7,698,350,952.84
  5. Step 5: Solve for x
    x = 7,698,350,952.84/98,858.82
  6. Step 6: Final answer
    x = 77,872.17

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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.