Home / 72,941.13-100,658.70-39,407.13

Finding the Fourth Proportional to 72,941.13, 100,658.70 and 39,407.13

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Solution

The fourth proportional to 72,941.13, 100,658.70 and 39,407.13 is: 54,381.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,941.13 : 100,658.70 = 39,407.13 : x
  2. Step 2: Convert to fraction form
    72,941.13/100,658.70 = 39,407.13/x
  3. Step 3: Cross multiply
    72,941.13x = 100,658.70 × 39,407.13
  4. Step 4: Simplify right side
    72,941.13x = 3,966,670,476.53
  5. Step 5: Solve for x
    x = 3,966,670,476.53/72,941.13
  6. Step 6: Final answer
    x = 54,381.81

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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.