Home / 86,975.68-119,909.28-56,701.12

Finding the Fourth Proportional to 86,975.68, 119,909.28 and 56,701.12

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Solution

The fourth proportional to 86,975.68, 119,909.28 and 56,701.12 is: 78,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,975.68 : 119,909.28 = 56,701.12 : x
  2. Step 2: Convert to fraction form
    86,975.68/119,909.28 = 56,701.12/x
  3. Step 3: Cross multiply
    86,975.68x = 119,909.28 × 56,701.12
  4. Step 4: Simplify right side
    86,975.68x = 6,798,990,474.39
  5. Step 5: Solve for x
    x = 6,798,990,474.39/86,975.68
  6. Step 6: Final answer
    x = 78,171.17

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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.