Home / 83,421.61-115,124.16-50,715.97

Finding the Fourth Proportional to 83,421.61, 115,124.16 and 50,715.97

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Solution

The fourth proportional to 83,421.61, 115,124.16 and 50,715.97 is: 69,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,421.61 : 115,124.16 = 50,715.97 : x
  2. Step 2: Convert to fraction form
    83,421.61/115,124.16 = 50,715.97/x
  3. Step 3: Cross multiply
    83,421.61x = 115,124.16 × 50,715.97
  4. Step 4: Simplify right side
    83,421.61x = 5,838,633,444.84
  5. Step 5: Solve for x
    x = 5,838,633,444.84/83,421.61
  6. Step 6: Final answer
    x = 69,989.46

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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.