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Finding the Fourth Proportional to 56,216.70, 84,329.85 and 19,280.70

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Solution

The fourth proportional to 56,216.70, 84,329.85 and 19,280.70 is: 28,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,216.70 : 84,329.85 = 19,280.70 : x
  2. Step 2: Convert to fraction form
    56,216.70/84,329.85 = 19,280.70/x
  3. Step 3: Cross multiply
    56,216.70x = 84,329.85 × 19,280.70
  4. Step 4: Simplify right side
    56,216.70x = 1,625,938,538.90
  5. Step 5: Solve for x
    x = 1,625,938,538.90/56,216.70
  6. Step 6: Final answer
    x = 28,922.70

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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.