Home / 51,820.10-77,730.15-47,672.90

Finding the Fourth Proportional to 51,820.10, 77,730.15 and 47,672.90

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Solution

The fourth proportional to 51,820.10, 77,730.15 and 47,672.90 is: 71,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,820.10 : 77,730.15 = 47,672.90 : x
  2. Step 2: Convert to fraction form
    51,820.10/77,730.15 = 47,672.90/x
  3. Step 3: Cross multiply
    51,820.10x = 77,730.15 × 47,672.90
  4. Step 4: Simplify right side
    51,820.10x = 3,705,621,667.94
  5. Step 5: Solve for x
    x = 3,705,621,667.94/51,820.10
  6. Step 6: Final answer
    x = 71,509.35

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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.