Home / 74,415.40-102,695.10-40,423.87

Finding the Fourth Proportional to 74,415.40, 102,695.10 and 40,423.87

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Solution

The fourth proportional to 74,415.40, 102,695.10 and 40,423.87 is: 55,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,415.40 : 102,695.10 = 40,423.87 : x
  2. Step 2: Convert to fraction form
    74,415.40/102,695.10 = 40,423.87/x
  3. Step 3: Cross multiply
    74,415.40x = 102,695.10 × 40,423.87
  4. Step 4: Simplify right side
    74,415.40x = 4,151,333,372.04
  5. Step 5: Solve for x
    x = 4,151,333,372.04/74,415.40
  6. Step 6: Final answer
    x = 55,785.94

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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.