Home / 87,038.64-120,113.19-49,312.80

Finding the Fourth Proportional to 87,038.64, 120,113.19 and 49,312.80

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Solution

The fourth proportional to 87,038.64, 120,113.19 and 49,312.80 is: 68,051.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,038.64 : 120,113.19 = 49,312.80 : x
  2. Step 2: Convert to fraction form
    87,038.64/120,113.19 = 49,312.80/x
  3. Step 3: Cross multiply
    87,038.64x = 120,113.19 × 49,312.80
  4. Step 4: Simplify right side
    87,038.64x = 5,923,117,715.83
  5. Step 5: Solve for x
    x = 5,923,117,715.83/87,038.64
  6. Step 6: Final answer
    x = 68,051.59

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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.