Home / 51,291.55-76,762.28-42,980.95

Finding the Fourth Proportional to 51,291.55, 76,762.28 and 42,980.95

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Solution

The fourth proportional to 51,291.55, 76,762.28 and 42,980.95 is: 64,324.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,291.55 : 76,762.28 = 42,980.95 : x
  2. Step 2: Convert to fraction form
    51,291.55/76,762.28 = 42,980.95/x
  3. Step 3: Cross multiply
    51,291.55x = 76,762.28 × 42,980.95
  4. Step 4: Simplify right side
    51,291.55x = 3,299,315,503.66
  5. Step 5: Solve for x
    x = 3,299,315,503.66/51,291.55
  6. Step 6: Final answer
    x = 64,324.74

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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.