Home / 42,777.12-63,739.32-38,121.60

Finding the Fourth Proportional to 42,777.12, 63,739.32 and 38,121.60

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Solution

The fourth proportional to 42,777.12, 63,739.32 and 38,121.60 is: 56,802.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,777.12 : 63,739.32 = 38,121.60 : x
  2. Step 2: Convert to fraction form
    42,777.12/63,739.32 = 38,121.60/x
  3. Step 3: Cross multiply
    42,777.12x = 63,739.32 × 38,121.60
  4. Step 4: Simplify right side
    42,777.12x = 2,429,844,861.31
  5. Step 5: Solve for x
    x = 2,429,844,861.31/42,777.12
  6. Step 6: Final answer
    x = 56,802.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.