Home / 76,910.71-106,136.80-42,455.46

Finding the Fourth Proportional to 76,910.71, 106,136.80 and 42,455.46

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Solution

The fourth proportional to 76,910.71, 106,136.80 and 42,455.46 is: 58,588.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,910.71 : 106,136.80 = 42,455.46 : x
  2. Step 2: Convert to fraction form
    76,910.71/106,136.80 = 42,455.46/x
  3. Step 3: Cross multiply
    76,910.71x = 106,136.80 × 42,455.46
  4. Step 4: Simplify right side
    76,910.71x = 4,506,086,560.79
  5. Step 5: Solve for x
    x = 4,506,086,560.79/76,910.71
  6. Step 6: Final answer
    x = 58,588.55

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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.