Home / 45,812.40-68,761.80-28,316.40

Finding the Fourth Proportional to 45,812.40, 68,761.80 and 28,316.40

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Solution

The fourth proportional to 45,812.40, 68,761.80 and 28,316.40 is: 42,501.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,812.40 : 68,761.80 = 28,316.40 : x
  2. Step 2: Convert to fraction form
    45,812.40/68,761.80 = 28,316.40/x
  3. Step 3: Cross multiply
    45,812.40x = 68,761.80 × 28,316.40
  4. Step 4: Simplify right side
    45,812.40x = 1,947,086,633.52
  5. Step 5: Solve for x
    x = 1,947,086,633.52/45,812.40
  6. Step 6: Final answer
    x = 42,501.30

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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.