Home / 85,487.49-118,005.66-76,519.17

Finding the Fourth Proportional to 85,487.49, 118,005.66 and 76,519.17

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Solution

The fourth proportional to 85,487.49, 118,005.66 and 76,519.17 is: 105,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,487.49 : 118,005.66 = 76,519.17 : x
  2. Step 2: Convert to fraction form
    85,487.49/118,005.66 = 76,519.17/x
  3. Step 3: Cross multiply
    85,487.49x = 118,005.66 × 76,519.17
  4. Step 4: Simplify right side
    85,487.49x = 9,029,695,158.50
  5. Step 5: Solve for x
    x = 9,029,695,158.50/85,487.49
  6. Step 6: Final answer
    x = 105,625.92

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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.