Home / 99,559.22-137,390.65-57,124.40

Finding the Fourth Proportional to 99,559.22, 137,390.65 and 57,124.40

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Solution

The fourth proportional to 99,559.22, 137,390.65 and 57,124.40 is: 78,831.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,559.22 : 137,390.65 = 57,124.40 : x
  2. Step 2: Convert to fraction form
    99,559.22/137,390.65 = 57,124.40/x
  3. Step 3: Cross multiply
    99,559.22x = 137,390.65 × 57,124.40
  4. Step 4: Simplify right side
    99,559.22x = 7,848,357,617.10
  5. Step 5: Solve for x
    x = 7,848,357,617.10/99,559.22
  6. Step 6: Final answer
    x = 78,831.05

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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.