Home / 85,473.36-128,205.18-23,139

Finding the Fourth Proportional to 85,473.36, 128,205.18 and 23,139

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Solution

The fourth proportional to 85,473.36, 128,205.18 and 23,139 is: 34,707.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,473.36 : 128,205.18 = 23,139 : x
  2. Step 2: Convert to fraction form
    85,473.36/128,205.18 = 23,139/x
  3. Step 3: Cross multiply
    85,473.36x = 128,205.18 × 23,139
  4. Step 4: Simplify right side
    85,473.36x = 2,966,539,660.02
  5. Step 5: Solve for x
    x = 2,966,539,660.02/85,473.36
  6. Step 6: Final answer
    x = 34,707.18

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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.