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Finding the Fourth Proportional to 66,477.79, 99,570.18 and 54,948.81

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Solution

The fourth proportional to 66,477.79, 99,570.18 and 54,948.81 is: 82,302.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,477.79 : 99,570.18 = 54,948.81 : x
  2. Step 2: Convert to fraction form
    66,477.79/99,570.18 = 54,948.81/x
  3. Step 3: Cross multiply
    66,477.79x = 99,570.18 × 54,948.81
  4. Step 4: Simplify right side
    66,477.79x = 5,471,262,902.49
  5. Step 5: Solve for x
    x = 5,471,262,902.49/66,477.79
  6. Step 6: Final answer
    x = 82,302.12

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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.