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Finding the Fourth Proportional to 66,610.64, 99,430.02 and 58,203

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Solution

The fourth proportional to 66,610.64, 99,430.02 and 58,203 is: 86,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,610.64 : 99,430.02 = 58,203 : x
  2. Step 2: Convert to fraction form
    66,610.64/99,430.02 = 58,203/x
  3. Step 3: Cross multiply
    66,610.64x = 99,430.02 × 58,203
  4. Step 4: Simplify right side
    66,610.64x = 5,787,125,454.06
  5. Step 5: Solve for x
    x = 5,787,125,454.06/66,610.64
  6. Step 6: Final answer
    x = 86,879.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.