Home / 72,400.96-99,913.26-40,137.64

Finding the Fourth Proportional to 72,400.96, 99,913.26 and 40,137.64

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Solution

The fourth proportional to 72,400.96, 99,913.26 and 40,137.64 is: 55,389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400.96 : 99,913.26 = 40,137.64 : x
  2. Step 2: Convert to fraction form
    72,400.96/99,913.26 = 40,137.64/x
  3. Step 3: Cross multiply
    72,400.96x = 99,913.26 × 40,137.64
  4. Step 4: Simplify right side
    72,400.96x = 4,010,282,461.11
  5. Step 5: Solve for x
    x = 4,010,282,461.11/72,400.96
  6. Step 6: Final answer
    x = 55,389.91

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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.