Home / 55,972.80-77,242.34-30,478.77

Finding the Fourth Proportional to 55,972.80, 77,242.34 and 30,478.77

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Solution

The fourth proportional to 55,972.80, 77,242.34 and 30,478.77 is: 42,060.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,972.80 : 77,242.34 = 30,478.77 : x
  2. Step 2: Convert to fraction form
    55,972.80/77,242.34 = 30,478.77/x
  3. Step 3: Cross multiply
    55,972.80x = 77,242.34 × 30,478.77
  4. Step 4: Simplify right side
    55,972.80x = 2,354,251,362.73
  5. Step 5: Solve for x
    x = 2,354,251,362.73/55,972.80
  6. Step 6: Final answer
    x = 42,060.63

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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.