Home / 87,030.50-120,102.21-49,307.30

Finding the Fourth Proportional to 87,030.50, 120,102.21 and 49,307.30

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Solution

The fourth proportional to 87,030.50, 120,102.21 and 49,307.30 is: 68,044.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,030.50 : 120,102.21 = 49,307.30 : x
  2. Step 2: Convert to fraction form
    87,030.50/120,102.21 = 49,307.30/x
  3. Step 3: Cross multiply
    87,030.50x = 120,102.21 × 49,307.30
  4. Step 4: Simplify right side
    87,030.50x = 5,921,915,699.13
  5. Step 5: Solve for x
    x = 5,921,915,699.13/87,030.50
  6. Step 6: Final answer
    x = 68,044.14

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1.5x scale

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.