Home / 85,106.10-127,621.40-32,478.78

Finding the Fourth Proportional to 85,106.10, 127,621.40 and 32,478.78

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Solution

The fourth proportional to 85,106.10, 127,621.40 and 32,478.78 is: 48,703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,106.10 : 127,621.40 = 32,478.78 : x
  2. Step 2: Convert to fraction form
    85,106.10/127,621.40 = 32,478.78/x
  3. Step 3: Cross multiply
    85,106.10x = 127,621.40 × 32,478.78
  4. Step 4: Simplify right side
    85,106.10x = 4,144,987,373.89
  5. Step 5: Solve for x
    x = 4,144,987,373.89/85,106.10
  6. Step 6: Final answer
    x = 48,703.76

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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.