Home / 55,912-77,159.28-30,760.96

Finding the Fourth Proportional to 55,912, 77,159.28 and 30,760.96

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Solution

The fourth proportional to 55,912, 77,159.28 and 30,760.96 is: 42,450.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,912 : 77,159.28 = 30,760.96 : x
  2. Step 2: Convert to fraction form
    55,912/77,159.28 = 30,760.96/x
  3. Step 3: Cross multiply
    55,912x = 77,159.28 × 30,760.96
  4. Step 4: Simplify right side
    55,912x = 2,373,493,525.71
  5. Step 5: Solve for x
    x = 2,373,493,525.71/55,912
  6. Step 6: Final answer
    x = 42,450.52

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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.