Home / 91,678.92-137,499.84-53,705.40

Finding the Fourth Proportional to 91,678.92, 137,499.84 and 53,705.40

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Solution

The fourth proportional to 91,678.92, 137,499.84 and 53,705.40 is: 80,547.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,678.92 : 137,499.84 = 53,705.40 : x
  2. Step 2: Convert to fraction form
    91,678.92/137,499.84 = 53,705.40/x
  3. Step 3: Cross multiply
    91,678.92x = 137,499.84 × 53,705.40
  4. Step 4: Simplify right side
    91,678.92x = 7,384,483,907.14
  5. Step 5: Solve for x
    x = 7,384,483,907.14/91,678.92
  6. Step 6: Final answer
    x = 80,547.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.