Home / 74,342.02-102,589.24-40,349.78

Finding the Fourth Proportional to 74,342.02, 102,589.24 and 40,349.78

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Solution

The fourth proportional to 74,342.02, 102,589.24 and 40,349.78 is: 55,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,342.02 : 102,589.24 = 40,349.78 : x
  2. Step 2: Convert to fraction form
    74,342.02/102,589.24 = 40,349.78/x
  3. Step 3: Cross multiply
    74,342.02x = 102,589.24 × 40,349.78
  4. Step 4: Simplify right side
    74,342.02x = 4,139,452,549.67
  5. Step 5: Solve for x
    x = 4,139,452,549.67/74,342.02
  6. Step 6: Final answer
    x = 55,681.20

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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.