Home / 72,032.09-99,409.75-39,772.89

Finding the Fourth Proportional to 72,032.09, 99,409.75 and 39,772.89

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Solution

The fourth proportional to 72,032.09, 99,409.75 and 39,772.89 is: 54,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,032.09 : 99,409.75 = 39,772.89 : x
  2. Step 2: Convert to fraction form
    72,032.09/99,409.75 = 39,772.89/x
  3. Step 3: Cross multiply
    72,032.09x = 99,409.75 × 39,772.89
  4. Step 4: Simplify right side
    72,032.09x = 3,953,812,952.25
  5. Step 5: Solve for x
    x = 3,953,812,952.25/72,032.09
  6. Step 6: Final answer
    x = 54,889.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.