Home / 78,725.12-118,113.18-47,130.24

Finding the Fourth Proportional to 78,725.12, 118,113.18 and 47,130.24

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Solution

The fourth proportional to 78,725.12, 118,113.18 and 47,130.24 is: 70,710.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725.12 : 118,113.18 = 47,130.24 : x
  2. Step 2: Convert to fraction form
    78,725.12/118,113.18 = 47,130.24/x
  3. Step 3: Cross multiply
    78,725.12x = 118,113.18 × 47,130.24
  4. Step 4: Simplify right side
    78,725.12x = 5,566,702,520.56
  5. Step 5: Solve for x
    x = 5,566,702,520.56/78,725.12
  6. Step 6: Final answer
    x = 70,710.63

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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.