Home / 51,648.40-71,265.80-28,988.35

Finding the Fourth Proportional to 51,648.40, 71,265.80 and 28,988.35

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Solution

The fourth proportional to 51,648.40, 71,265.80 and 28,988.35 is: 39,998.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,648.40 : 71,265.80 = 28,988.35 : x
  2. Step 2: Convert to fraction form
    51,648.40/71,265.80 = 28,988.35/x
  3. Step 3: Cross multiply
    51,648.40x = 71,265.80 × 28,988.35
  4. Step 4: Simplify right side
    51,648.40x = 2,065,877,818.30
  5. Step 5: Solve for x
    x = 2,065,877,818.30/51,648.40
  6. Step 6: Final answer
    x = 39,998.87

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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.