Home / 40,424.19-55,381.40-38,909.08

Finding the Fourth Proportional to 40,424.19, 55,381.40 and 38,909.08

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Solution

The fourth proportional to 40,424.19, 55,381.40 and 38,909.08 is: 53,305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,424.19 : 55,381.40 = 38,909.08 : x
  2. Step 2: Convert to fraction form
    40,424.19/55,381.40 = 38,909.08/x
  3. Step 3: Cross multiply
    40,424.19x = 55,381.40 × 38,909.08
  4. Step 4: Simplify right side
    40,424.19x = 2,154,839,323.11
  5. Step 5: Solve for x
    x = 2,154,839,323.11/40,424.19
  6. Step 6: Final answer
    x = 53,305.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.