Home / 42,777.10-64,122.45-19,420.30

Finding the Fourth Proportional to 42,777.10, 64,122.45 and 19,420.30

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Solution

The fourth proportional to 42,777.10, 64,122.45 and 19,420.30 is: 29,110.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,777.10 : 64,122.45 = 19,420.30 : x
  2. Step 2: Convert to fraction form
    42,777.10/64,122.45 = 19,420.30/x
  3. Step 3: Cross multiply
    42,777.10x = 64,122.45 × 19,420.30
  4. Step 4: Simplify right side
    42,777.10x = 1,245,277,215.74
  5. Step 5: Solve for x
    x = 1,245,277,215.74/42,777.10
  6. Step 6: Final answer
    x = 29,110.84

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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.