Home / 71,145.61-98,187.15-39,320.66

Finding the Fourth Proportional to 71,145.61, 98,187.15 and 39,320.66

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Solution

The fourth proportional to 71,145.61, 98,187.15 and 39,320.66 is: 54,265.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,145.61 : 98,187.15 = 39,320.66 : x
  2. Step 2: Convert to fraction form
    71,145.61/98,187.15 = 39,320.66/x
  3. Step 3: Cross multiply
    71,145.61x = 98,187.15 × 39,320.66
  4. Step 4: Simplify right side
    71,145.61x = 3,860,783,050.58
  5. Step 5: Solve for x
    x = 3,860,783,050.58/71,145.61
  6. Step 6: Final answer
    x = 54,265.94

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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.