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Finding the Fourth Proportional to 98,776.32, 136,311.04 and 54,064

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Solution

The fourth proportional to 98,776.32, 136,311.04 and 54,064 is: 74,608.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,776.32 : 136,311.04 = 54,064 : x
  2. Step 2: Convert to fraction form
    98,776.32/136,311.04 = 54,064/x
  3. Step 3: Cross multiply
    98,776.32x = 136,311.04 × 54,064
  4. Step 4: Simplify right side
    98,776.32x = 7,369,520,066.56
  5. Step 5: Solve for x
    x = 7,369,520,066.56/98,776.32
  6. Step 6: Final answer
    x = 74,608.17

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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.