Home / 55,980.37-77,253.11-30,830.05

Finding the Fourth Proportional to 55,980.37, 77,253.11 and 30,830.05

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Solution

The fourth proportional to 55,980.37, 77,253.11 and 30,830.05 is: 42,545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,980.37 : 77,253.11 = 30,830.05 : x
  2. Step 2: Convert to fraction form
    55,980.37/77,253.11 = 30,830.05/x
  3. Step 3: Cross multiply
    55,980.37x = 77,253.11 × 30,830.05
  4. Step 4: Simplify right side
    55,980.37x = 2,381,717,243.96
  5. Step 5: Solve for x
    x = 2,381,717,243.96/55,980.37
  6. Step 6: Final answer
    x = 42,545.58

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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.