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Finding the Fourth Proportional to 98,477.76, 135,897.57 and 56,035.38

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Solution

The fourth proportional to 98,477.76, 135,897.57 and 56,035.38 is: 77,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,477.76 : 135,897.57 = 56,035.38 : x
  2. Step 2: Convert to fraction form
    98,477.76/135,897.57 = 56,035.38/x
  3. Step 3: Cross multiply
    98,477.76x = 135,897.57 × 56,035.38
  4. Step 4: Simplify right side
    98,477.76x = 7,615,071,976.03
  5. Step 5: Solve for x
    x = 7,615,071,976.03/98,477.76
  6. Step 6: Final answer
    x = 77,327.83

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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.