Home / 99,565.08-137,396.70-57,124.32

Finding the Fourth Proportional to 99,565.08, 137,396.70 and 57,124.32

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Solution

The fourth proportional to 99,565.08, 137,396.70 and 57,124.32 is: 78,829.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,565.08 : 137,396.70 = 57,124.32 : x
  2. Step 2: Convert to fraction form
    99,565.08/137,396.70 = 57,124.32/x
  3. Step 3: Cross multiply
    99,565.08x = 137,396.70 × 57,124.32
  4. Step 4: Simplify right side
    99,565.08x = 7,848,693,057.74
  5. Step 5: Solve for x
    x = 7,848,693,057.74/99,565.08
  6. Step 6: Final answer
    x = 78,829.78

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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.