Home / 82,088.32-123,139.47-25,913.40

Finding the Fourth Proportional to 82,088.32, 123,139.47 and 25,913.40

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Solution

The fourth proportional to 82,088.32, 123,139.47 and 25,913.40 is: 38,872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,088.32 : 123,139.47 = 25,913.40 : x
  2. Step 2: Convert to fraction form
    82,088.32/123,139.47 = 25,913.40/x
  3. Step 3: Cross multiply
    82,088.32x = 123,139.47 × 25,913.40
  4. Step 4: Simplify right side
    82,088.32x = 3,190,962,341.90
  5. Step 5: Solve for x
    x = 3,190,962,341.90/82,088.32
  6. Step 6: Final answer
    x = 38,872.31

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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.