Home / 89,642.50-123,740.49-70,472.26

Finding the Fourth Proportional to 89,642.50, 123,740.49 and 70,472.26

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Solution

The fourth proportional to 89,642.50, 123,740.49 and 70,472.26 is: 97,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,642.50 : 123,740.49 = 70,472.26 : x
  2. Step 2: Convert to fraction form
    89,642.50/123,740.49 = 70,472.26/x
  3. Step 3: Cross multiply
    89,642.50x = 123,740.49 × 70,472.26
  4. Step 4: Simplify right side
    89,642.50x = 8,720,271,983.81
  5. Step 5: Solve for x
    x = 8,720,271,983.81/89,642.50
  6. Step 6: Final answer
    x = 97,278.32

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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.