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Finding the Fourth Proportional to 74,247.90, 102,462.80 and 40,256.30

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Solution

The fourth proportional to 74,247.90, 102,462.80 and 40,256.30 is: 55,554.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,247.90 : 102,462.80 = 40,256.30 : x
  2. Step 2: Convert to fraction form
    74,247.90/102,462.80 = 40,256.30/x
  3. Step 3: Cross multiply
    74,247.90x = 102,462.80 × 40,256.30
  4. Step 4: Simplify right side
    74,247.90x = 4,124,773,215.64
  5. Step 5: Solve for x
    x = 4,124,773,215.64/74,247.90
  6. Step 6: Final answer
    x = 55,554.07

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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.