Home / 56,720.52-78,260.88-47,680.20

Finding the Fourth Proportional to 56,720.52, 78,260.88 and 47,680.20

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Solution

The fourth proportional to 56,720.52, 78,260.88 and 47,680.20 is: 65,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,720.52 : 78,260.88 = 47,680.20 : x
  2. Step 2: Convert to fraction form
    56,720.52/78,260.88 = 47,680.20/x
  3. Step 3: Cross multiply
    56,720.52x = 78,260.88 × 47,680.20
  4. Step 4: Simplify right side
    56,720.52x = 3,731,494,410.58
  5. Step 5: Solve for x
    x = 3,731,494,410.58/56,720.52
  6. Step 6: Final answer
    x = 65,787.38

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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.