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Finding the Fourth Proportional to 72,483.74, 100,001.54 and 57,378.86

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Solution

The fourth proportional to 72,483.74, 100,001.54 and 57,378.86 is: 79,162.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483.74 : 100,001.54 = 57,378.86 : x
  2. Step 2: Convert to fraction form
    72,483.74/100,001.54 = 57,378.86/x
  3. Step 3: Cross multiply
    72,483.74x = 100,001.54 × 57,378.86
  4. Step 4: Simplify right side
    72,483.74x = 5,737,974,363.44
  5. Step 5: Solve for x
    x = 5,737,974,363.44/72,483.74
  6. Step 6: Final answer
    x = 79,162.23

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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.