Home / 98,639.28-147,980.79-28,513.26

Finding the Fourth Proportional to 98,639.28, 147,980.79 and 28,513.26

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Solution

The fourth proportional to 98,639.28, 147,980.79 and 28,513.26 is: 42,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,639.28 : 147,980.79 = 28,513.26 : x
  2. Step 2: Convert to fraction form
    98,639.28/147,980.79 = 28,513.26/x
  3. Step 3: Cross multiply
    98,639.28x = 147,980.79 × 28,513.26
  4. Step 4: Simplify right side
    98,639.28x = 4,219,414,740.28
  5. Step 5: Solve for x
    x = 4,219,414,740.28/98,639.28
  6. Step 6: Final answer
    x = 42,776.21

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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.