Home / 72,815.28-100,484.84-40,984.16

Finding the Fourth Proportional to 72,815.28, 100,484.84 and 40,984.16

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Solution

The fourth proportional to 72,815.28, 100,484.84 and 40,984.16 is: 56,558.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,815.28 : 100,484.84 = 40,984.16 : x
  2. Step 2: Convert to fraction form
    72,815.28/100,484.84 = 40,984.16/x
  3. Step 3: Cross multiply
    72,815.28x = 100,484.84 × 40,984.16
  4. Step 4: Simplify right side
    72,815.28x = 4,118,286,760.13
  5. Step 5: Solve for x
    x = 4,118,286,760.13/72,815.28
  6. Step 6: Final answer
    x = 56,558.00

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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.