Home / 92,721.35-139,035.45-45,340.13

Finding the Fourth Proportional to 92,721.35, 139,035.45 and 45,340.13

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Solution

The fourth proportional to 92,721.35, 139,035.45 and 45,340.13 is: 67,987.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,721.35 : 139,035.45 = 45,340.13 : x
  2. Step 2: Convert to fraction form
    92,721.35/139,035.45 = 45,340.13/x
  3. Step 3: Cross multiply
    92,721.35x = 139,035.45 × 45,340.13
  4. Step 4: Simplify right side
    92,721.35x = 6,303,885,377.61
  5. Step 5: Solve for x
    x = 6,303,885,377.61/92,721.35
  6. Step 6: Final answer
    x = 67,987.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.