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Finding the Fourth Proportional to 98,839.44, 136,400.76 and 56,401.92

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Solution

The fourth proportional to 98,839.44, 136,400.76 and 56,401.92 is: 77,835.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,839.44 : 136,400.76 = 56,401.92 : x
  2. Step 2: Convert to fraction form
    98,839.44/136,400.76 = 56,401.92/x
  3. Step 3: Cross multiply
    98,839.44x = 136,400.76 × 56,401.92
  4. Step 4: Simplify right side
    98,839.44x = 7,693,264,753.46
  5. Step 5: Solve for x
    x = 7,693,264,753.46/98,839.44
  6. Step 6: Final answer
    x = 77,835.98

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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.