Home / 98,711.79-136,221.84-53,389.81

Finding the Fourth Proportional to 98,711.79, 136,221.84 and 53,389.81

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Solution

The fourth proportional to 98,711.79, 136,221.84 and 53,389.81 is: 73,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,711.79 : 136,221.84 = 53,389.81 : x
  2. Step 2: Convert to fraction form
    98,711.79/136,221.84 = 53,389.81/x
  3. Step 3: Cross multiply
    98,711.79x = 136,221.84 × 53,389.81
  4. Step 4: Simplify right side
    98,711.79x = 7,272,858,155.45
  5. Step 5: Solve for x
    x = 7,272,858,155.45/98,711.79
  6. Step 6: Final answer
    x = 73,677.71

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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.