Home / 51,647.52-71,276.88-28,988.16

Finding the Fourth Proportional to 51,647.52, 71,276.88 and 28,988.16

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Solution

The fourth proportional to 51,647.52, 71,276.88 and 28,988.16 is: 40,005.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,647.52 : 71,276.88 = 28,988.16 : x
  2. Step 2: Convert to fraction form
    51,647.52/71,276.88 = 28,988.16/x
  3. Step 3: Cross multiply
    51,647.52x = 71,276.88 × 28,988.16
  4. Step 4: Simplify right side
    51,647.52x = 2,066,185,601.74
  5. Step 5: Solve for x
    x = 2,066,185,601.74/51,647.52
  6. Step 6: Final answer
    x = 40,005.51

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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.