Home / 66,128.40-99,046.80-58,741.20

Finding the Fourth Proportional to 66,128.40, 99,046.80 and 58,741.20

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Solution

The fourth proportional to 66,128.40, 99,046.80 and 58,741.20 is: 87,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128.40 : 99,046.80 = 58,741.20 : x
  2. Step 2: Convert to fraction form
    66,128.40/99,046.80 = 58,741.20/x
  3. Step 3: Cross multiply
    66,128.40x = 99,046.80 × 58,741.20
  4. Step 4: Simplify right side
    66,128.40x = 5,818,127,888.16
  5. Step 5: Solve for x
    x = 5,818,127,888.16/66,128.40
  6. Step 6: Final answer
    x = 87,982.29

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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.