Home / 72,945.04-100,664.20-39,411.04

Finding the Fourth Proportional to 72,945.04, 100,664.20 and 39,411.04

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Solution

The fourth proportional to 72,945.04, 100,664.20 and 39,411.04 is: 54,387.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,945.04 : 100,664.20 = 39,411.04 : x
  2. Step 2: Convert to fraction form
    72,945.04/100,664.20 = 39,411.04/x
  3. Step 3: Cross multiply
    72,945.04x = 100,664.20 × 39,411.04
  4. Step 4: Simplify right side
    72,945.04x = 3,967,280,812.77
  5. Step 5: Solve for x
    x = 3,967,280,812.77/72,945.04
  6. Step 6: Final answer
    x = 54,387.26

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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.