Home / 55,189.86-76,159.74-31,316.02

Finding the Fourth Proportional to 55,189.86, 76,159.74 and 31,316.02

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Solution

The fourth proportional to 55,189.86, 76,159.74 and 31,316.02 is: 43,214.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,189.86 : 76,159.74 = 31,316.02 : x
  2. Step 2: Convert to fraction form
    55,189.86/76,159.74 = 31,316.02/x
  3. Step 3: Cross multiply
    55,189.86x = 76,159.74 × 31,316.02
  4. Step 4: Simplify right side
    55,189.86x = 2,385,019,868.07
  5. Step 5: Solve for x
    x = 2,385,019,868.07/55,189.86
  6. Step 6: Final answer
    x = 43,214.82

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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.