Home / 72,032.20-107,999.70-38,303.80

Finding the Fourth Proportional to 72,032.20, 107,999.70 and 38,303.80

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Solution

The fourth proportional to 72,032.20, 107,999.70 and 38,303.80 is: 57,429.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,032.20 : 107,999.70 = 38,303.80 : x
  2. Step 2: Convert to fraction form
    72,032.20/107,999.70 = 38,303.80/x
  3. Step 3: Cross multiply
    72,032.20x = 107,999.70 × 38,303.80
  4. Step 4: Simplify right side
    72,032.20x = 4,136,798,908.86
  5. Step 5: Solve for x
    x = 4,136,798,908.86/72,032.20
  6. Step 6: Final answer
    x = 57,429.86

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1.5x scale

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.