Home / 87,859.49-121,217.51-56,038.64

Finding the Fourth Proportional to 87,859.49, 121,217.51 and 56,038.64

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Solution

The fourth proportional to 87,859.49, 121,217.51 and 56,038.64 is: 77,315.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,859.49 : 121,217.51 = 56,038.64 : x
  2. Step 2: Convert to fraction form
    87,859.49/121,217.51 = 56,038.64/x
  3. Step 3: Cross multiply
    87,859.49x = 121,217.51 × 56,038.64
  4. Step 4: Simplify right side
    87,859.49x = 6,792,863,938.60
  5. Step 5: Solve for x
    x = 6,792,863,938.60/87,859.49
  6. Step 6: Final answer
    x = 77,315.09

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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.