Home / 66,490.16-99,710.36-28,534.64

Finding the Fourth Proportional to 66,490.16, 99,710.36 and 28,534.64

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Solution

The fourth proportional to 66,490.16, 99,710.36 and 28,534.64 is: 42,791.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,490.16 : 99,710.36 = 28,534.64 : x
  2. Step 2: Convert to fraction form
    66,490.16/99,710.36 = 28,534.64/x
  3. Step 3: Cross multiply
    66,490.16x = 99,710.36 × 28,534.64
  4. Step 4: Simplify right side
    66,490.16x = 2,845,199,226.87
  5. Step 5: Solve for x
    x = 2,845,199,226.87/66,490.16
  6. Step 6: Final answer
    x = 42,791.28

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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.