Home / 76,768.40-105,938.44-42,777.04

Finding the Fourth Proportional to 76,768.40, 105,938.44 and 42,777.04

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Solution

The fourth proportional to 76,768.40, 105,938.44 and 42,777.04 is: 59,031.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,768.40 : 105,938.44 = 42,777.04 : x
  2. Step 2: Convert to fraction form
    76,768.40/105,938.44 = 42,777.04/x
  3. Step 3: Cross multiply
    76,768.40x = 105,938.44 × 42,777.04
  4. Step 4: Simplify right side
    76,768.40x = 4,531,732,885.42
  5. Step 5: Solve for x
    x = 4,531,732,885.42/76,768.40
  6. Step 6: Final answer
    x = 59,031.23

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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.