Home / 72,154.09-99,574.80-40,323.09

Finding the Fourth Proportional to 72,154.09, 99,574.80 and 40,323.09

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Solution

The fourth proportional to 72,154.09, 99,574.80 and 40,323.09 is: 55,647.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,154.09 : 99,574.80 = 40,323.09 : x
  2. Step 2: Convert to fraction form
    72,154.09/99,574.80 = 40,323.09/x
  3. Step 3: Cross multiply
    72,154.09x = 99,574.80 × 40,323.09
  4. Step 4: Simplify right side
    72,154.09x = 4,015,163,622.13
  5. Step 5: Solve for x
    x = 4,015,163,622.13/72,154.09
  6. Step 6: Final answer
    x = 55,647.07

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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.