Home / 74,626.64-102,987.12-40,637.36

Finding the Fourth Proportional to 74,626.64, 102,987.12 and 40,637.36

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Solution

The fourth proportional to 74,626.64, 102,987.12 and 40,637.36 is: 56,080.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,626.64 : 102,987.12 = 40,637.36 : x
  2. Step 2: Convert to fraction form
    74,626.64/102,987.12 = 40,637.36/x
  3. Step 3: Cross multiply
    74,626.64x = 102,987.12 × 40,637.36
  4. Step 4: Simplify right side
    74,626.64x = 4,185,124,670.80
  5. Step 5: Solve for x
    x = 4,185,124,670.80/74,626.64
  6. Step 6: Final answer
    x = 56,080.84

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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.