Home / 72,035.91-99,415.20-40,209.60

Finding the Fourth Proportional to 72,035.91, 99,415.20 and 40,209.60

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Solution

The fourth proportional to 72,035.91, 99,415.20 and 40,209.60 is: 55,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035.91 : 99,415.20 = 40,209.60 : x
  2. Step 2: Convert to fraction form
    72,035.91/99,415.20 = 40,209.60/x
  3. Step 3: Cross multiply
    72,035.91x = 99,415.20 × 40,209.60
  4. Step 4: Simplify right side
    72,035.91x = 3,997,445,425.92
  5. Step 5: Solve for x
    x = 3,997,445,425.92/72,035.91
  6. Step 6: Final answer
    x = 55,492.40

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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.