Home / 55,338.18-76,365.01-31,140.50

Finding the Fourth Proportional to 55,338.18, 76,365.01 and 31,140.50

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Solution

The fourth proportional to 55,338.18, 76,365.01 and 31,140.50 is: 42,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,338.18 : 76,365.01 = 31,140.50 : x
  2. Step 2: Convert to fraction form
    55,338.18/76,365.01 = 31,140.50/x
  3. Step 3: Cross multiply
    55,338.18x = 76,365.01 × 31,140.50
  4. Step 4: Simplify right side
    55,338.18x = 2,378,044,212.08
  5. Step 5: Solve for x
    x = 2,378,044,212.08/55,338.18
  6. Step 6: Final answer
    x = 42,972.94

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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.