Home / 91,386.81-126,128.07-55,588.05

Finding the Fourth Proportional to 91,386.81, 126,128.07 and 55,588.05

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Solution

The fourth proportional to 91,386.81, 126,128.07 and 55,588.05 is: 76,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,386.81 : 126,128.07 = 55,588.05 : x
  2. Step 2: Convert to fraction form
    91,386.81/126,128.07 = 55,588.05/x
  3. Step 3: Cross multiply
    91,386.81x = 126,128.07 × 55,588.05
  4. Step 4: Simplify right side
    91,386.81x = 7,011,213,461.56
  5. Step 5: Solve for x
    x = 7,011,213,461.56/91,386.81
  6. Step 6: Final answer
    x = 76,720.19

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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.