Home / 55,913.79-77,081.85-39,970.56

Finding the Fourth Proportional to 55,913.79, 77,081.85 and 39,970.56

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Solution

The fourth proportional to 55,913.79, 77,081.85 and 39,970.56 is: 55,102.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,913.79 : 77,081.85 = 39,970.56 : x
  2. Step 2: Convert to fraction form
    55,913.79/77,081.85 = 39,970.56/x
  3. Step 3: Cross multiply
    55,913.79x = 77,081.85 × 39,970.56
  4. Step 4: Simplify right side
    55,913.79x = 3,081,004,710.34
  5. Step 5: Solve for x
    x = 3,081,004,710.34/55,913.79
  6. Step 6: Final answer
    x = 55,102.77

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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.