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Finding the Fourth Proportional to 89,842.40, 134,617.80 and 56,502.80

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Solution

The fourth proportional to 89,842.40, 134,617.80 and 56,502.80 is: 84,662.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,842.40 : 134,617.80 = 56,502.80 : x
  2. Step 2: Convert to fraction form
    89,842.40/134,617.80 = 56,502.80/x
  3. Step 3: Cross multiply
    89,842.40x = 134,617.80 × 56,502.80
  4. Step 4: Simplify right side
    89,842.40x = 7,606,282,629.84
  5. Step 5: Solve for x
    x = 7,606,282,629.84/89,842.40
  6. Step 6: Final answer
    x = 84,662.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.