Home / 66,051.20-99,088.80-21,665.60

Finding the Fourth Proportional to 66,051.20, 99,088.80 and 21,665.60

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Solution

The fourth proportional to 66,051.20, 99,088.80 and 21,665.60 is: 32,502.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,051.20 : 99,088.80 = 21,665.60 : x
  2. Step 2: Convert to fraction form
    66,051.20/99,088.80 = 21,665.60/x
  3. Step 3: Cross multiply
    66,051.20x = 99,088.80 × 21,665.60
  4. Step 4: Simplify right side
    66,051.20x = 2,146,818,305.28
  5. Step 5: Solve for x
    x = 2,146,818,305.28/66,051.20
  6. Step 6: Final answer
    x = 32,502.34

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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.