Home / 72,735.20-100,368.96-40,897.76

Finding the Fourth Proportional to 72,735.20, 100,368.96 and 40,897.76

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Solution

The fourth proportional to 72,735.20, 100,368.96 and 40,897.76 is: 56,435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,735.20 : 100,368.96 = 40,897.76 : x
  2. Step 2: Convert to fraction form
    72,735.20/100,368.96 = 40,897.76/x
  3. Step 3: Cross multiply
    72,735.20x = 100,368.96 × 40,897.76
  4. Step 4: Simplify right side
    72,735.20x = 4,104,865,637.53
  5. Step 5: Solve for x
    x = 4,104,865,637.53/72,735.20
  6. Step 6: Final answer
    x = 56,435.75

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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.