Home / 74,023-102,153.18-40,489.72

Finding the Fourth Proportional to 74,023, 102,153.18 and 40,489.72

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Solution

The fourth proportional to 74,023, 102,153.18 and 40,489.72 is: 55,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,023 : 102,153.18 = 40,489.72 : x
  2. Step 2: Convert to fraction form
    74,023/102,153.18 = 40,489.72/x
  3. Step 3: Cross multiply
    74,023x = 102,153.18 × 40,489.72
  4. Step 4: Simplify right side
    74,023x = 4,136,153,655.31
  5. Step 5: Solve for x
    x = 4,136,153,655.31/74,023
  6. Step 6: Final answer
    x = 55,876.60

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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.