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Finding the Fourth Proportional to 66,719.84, 92,134.60 and 42,888.02

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Solution

The fourth proportional to 66,719.84, 92,134.60 and 42,888.02 is: 59,224.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,719.84 : 92,134.60 = 42,888.02 : x
  2. Step 2: Convert to fraction form
    66,719.84/92,134.60 = 42,888.02/x
  3. Step 3: Cross multiply
    66,719.84x = 92,134.60 × 42,888.02
  4. Step 4: Simplify right side
    66,719.84x = 3,951,470,567.49
  5. Step 5: Solve for x
    x = 3,951,470,567.49/66,719.84
  6. Step 6: Final answer
    x = 59,224.82

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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.