Home / 51,642.45-71,281.85-30,428.55

Finding the Fourth Proportional to 51,642.45, 71,281.85 and 30,428.55

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Solution

The fourth proportional to 51,642.45, 71,281.85 and 30,428.55 is: 42,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,642.45 : 71,281.85 = 30,428.55 : x
  2. Step 2: Convert to fraction form
    51,642.45/71,281.85 = 30,428.55/x
  3. Step 3: Cross multiply
    51,642.45x = 71,281.85 × 30,428.55
  4. Step 4: Simplify right side
    51,642.45x = 2,169,003,184.67
  5. Step 5: Solve for x
    x = 2,169,003,184.67/51,642.45
  6. Step 6: Final answer
    x = 42,000.39

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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.