Home / 76,903.12-106,136.32-45,099.28

Finding the Fourth Proportional to 76,903.12, 106,136.32 and 45,099.28

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Solution

The fourth proportional to 76,903.12, 106,136.32 and 45,099.28 is: 62,242.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,903.12 : 106,136.32 = 45,099.28 : x
  2. Step 2: Convert to fraction form
    76,903.12/106,136.32 = 45,099.28/x
  3. Step 3: Cross multiply
    76,903.12x = 106,136.32 × 45,099.28
  4. Step 4: Simplify right side
    76,903.12x = 4,786,671,613.85
  5. Step 5: Solve for x
    x = 4,786,671,613.85/76,903.12
  6. Step 6: Final answer
    x = 62,242.88

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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.