Home / 51,172.88-70,618.31-28,510.47

Finding the Fourth Proportional to 51,172.88, 70,618.31 and 28,510.47

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Solution

The fourth proportional to 51,172.88, 70,618.31 and 28,510.47 is: 39,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,172.88 : 70,618.31 = 28,510.47 : x
  2. Step 2: Convert to fraction form
    51,172.88/70,618.31 = 28,510.47/x
  3. Step 3: Cross multiply
    51,172.88x = 70,618.31 × 28,510.47
  4. Step 4: Simplify right side
    51,172.88x = 2,013,361,208.71
  5. Step 5: Solve for x
    x = 2,013,361,208.71/51,172.88
  6. Step 6: Final answer
    x = 39,344.30

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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.