Home / 51,970.68-77,985.25-28,279.95

Finding the Fourth Proportional to 51,970.68, 77,985.25 and 28,279.95

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Solution

The fourth proportional to 51,970.68, 77,985.25 and 28,279.95 is: 42,435.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,970.68 : 77,985.25 = 28,279.95 : x
  2. Step 2: Convert to fraction form
    51,970.68/77,985.25 = 28,279.95/x
  3. Step 3: Cross multiply
    51,970.68x = 77,985.25 × 28,279.95
  4. Step 4: Simplify right side
    51,970.68x = 2,205,418,607.59
  5. Step 5: Solve for x
    x = 2,205,418,607.59/51,970.68
  6. Step 6: Final answer
    x = 42,435.82

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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.