Home / 74,890.10-112,304.28-30,486.80

Finding the Fourth Proportional to 74,890.10, 112,304.28 and 30,486.80

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Solution

The fourth proportional to 74,890.10, 112,304.28 and 30,486.80 is: 45,717.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,890.10 : 112,304.28 = 30,486.80 : x
  2. Step 2: Convert to fraction form
    74,890.10/112,304.28 = 30,486.80/x
  3. Step 3: Cross multiply
    74,890.10x = 112,304.28 × 30,486.80
  4. Step 4: Simplify right side
    74,890.10x = 3,423,798,123.50
  5. Step 5: Solve for x
    x = 3,423,798,123.50/74,890.10
  6. Step 6: Final answer
    x = 45,717.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.