Home / 55,135.08-76,088.10-31,262.76

Finding the Fourth Proportional to 55,135.08, 76,088.10 and 31,262.76

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Solution

The fourth proportional to 55,135.08, 76,088.10 and 31,262.76 is: 43,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,135.08 : 76,088.10 = 31,262.76 : x
  2. Step 2: Convert to fraction form
    55,135.08/76,088.10 = 31,262.76/x
  3. Step 3: Cross multiply
    55,135.08x = 76,088.10 × 31,262.76
  4. Step 4: Simplify right side
    55,135.08x = 2,378,724,009.16
  5. Step 5: Solve for x
    x = 2,378,724,009.16/55,135.08
  6. Step 6: Final answer
    x = 43,143.57

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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.