Home / 72,740.16-100,383.84-40,915.20

Finding the Fourth Proportional to 72,740.16, 100,383.84 and 40,915.20

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Solution

The fourth proportional to 72,740.16, 100,383.84 and 40,915.20 is: 56,464.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.16 : 100,383.84 = 40,915.20 : x
  2. Step 2: Convert to fraction form
    72,740.16/100,383.84 = 40,915.20/x
  3. Step 3: Cross multiply
    72,740.16x = 100,383.84 × 40,915.20
  4. Step 4: Simplify right side
    72,740.16x = 4,107,224,890.37
  5. Step 5: Solve for x
    x = 4,107,224,890.37/72,740.16
  6. Step 6: Final answer
    x = 56,464.34

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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.