Home / 87,950.59-121,384.84-55,688.21

Finding the Fourth Proportional to 87,950.59, 121,384.84 and 55,688.21

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Solution

The fourth proportional to 87,950.59, 121,384.84 and 55,688.21 is: 76,857.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,950.59 : 121,384.84 = 55,688.21 : x
  2. Step 2: Convert to fraction form
    87,950.59/121,384.84 = 55,688.21/x
  3. Step 3: Cross multiply
    87,950.59x = 121,384.84 × 55,688.21
  4. Step 4: Simplify right side
    87,950.59x = 6,759,703,853.81
  5. Step 5: Solve for x
    x = 6,759,703,853.81/87,950.59
  6. Step 6: Final answer
    x = 76,857.97

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1.5x scale

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.