Home / 74,339.30-102,588.28-40,347.78

Finding the Fourth Proportional to 74,339.30, 102,588.28 and 40,347.78

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Solution

The fourth proportional to 74,339.30, 102,588.28 and 40,347.78 is: 55,679.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,339.30 : 102,588.28 = 40,347.78 : x
  2. Step 2: Convert to fraction form
    74,339.30/102,588.28 = 40,347.78/x
  3. Step 3: Cross multiply
    74,339.30x = 102,588.28 × 40,347.78
  4. Step 4: Simplify right side
    74,339.30x = 4,139,209,352.02
  5. Step 5: Solve for x
    x = 4,139,209,352.02/74,339.30
  6. Step 6: Final answer
    x = 55,679.96

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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.