Home / 77,401.76-106,815.65-43,417.80

Finding the Fourth Proportional to 77,401.76, 106,815.65 and 43,417.80

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Solution

The fourth proportional to 77,401.76, 106,815.65 and 43,417.80 is: 59,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,401.76 : 106,815.65 = 43,417.80 : x
  2. Step 2: Convert to fraction form
    77,401.76/106,815.65 = 43,417.80/x
  3. Step 3: Cross multiply
    77,401.76x = 106,815.65 × 43,417.80
  4. Step 4: Simplify right side
    77,401.76x = 4,637,700,311.48
  5. Step 5: Solve for x
    x = 4,637,700,311.48/77,401.76
  6. Step 6: Final answer
    x = 59,917.25

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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.