Home / 83,705.40-125,543.70-31,087.80

Finding the Fourth Proportional to 83,705.40, 125,543.70 and 31,087.80

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Solution

The fourth proportional to 83,705.40, 125,543.70 and 31,087.80 is: 46,626.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,705.40 : 125,543.70 = 31,087.80 : x
  2. Step 2: Convert to fraction form
    83,705.40/125,543.70 = 31,087.80/x
  3. Step 3: Cross multiply
    83,705.40x = 125,543.70 × 31,087.80
  4. Step 4: Simplify right side
    83,705.40x = 3,902,877,436.86
  5. Step 5: Solve for x
    x = 3,902,877,436.86/83,705.40
  6. Step 6: Final answer
    x = 46,626.35

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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.