Home / 51,380.08-70,905.84-28,718.40

Finding the Fourth Proportional to 51,380.08, 70,905.84 and 28,718.40

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Solution

The fourth proportional to 51,380.08, 70,905.84 and 28,718.40 is: 39,632.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,380.08 : 70,905.84 = 28,718.40 : x
  2. Step 2: Convert to fraction form
    51,380.08/70,905.84 = 28,718.40/x
  3. Step 3: Cross multiply
    51,380.08x = 70,905.84 × 28,718.40
  4. Step 4: Simplify right side
    51,380.08x = 2,036,302,275.46
  5. Step 5: Solve for x
    x = 2,036,302,275.46/51,380.08
  6. Step 6: Final answer
    x = 39,632.14

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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.