Home / 77,172.45-116,337.10-72,028.74

Finding the Fourth Proportional to 77,172.45, 116,337.10 and 72,028.74

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Solution

The fourth proportional to 77,172.45, 116,337.10 and 72,028.74 is: 108,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,172.45 : 116,337.10 = 72,028.74 : x
  2. Step 2: Convert to fraction form
    77,172.45/116,337.10 = 72,028.74/x
  3. Step 3: Cross multiply
    77,172.45x = 116,337.10 × 72,028.74
  4. Step 4: Simplify right side
    77,172.45x = 8,379,614,728.25
  5. Step 5: Solve for x
    x = 8,379,614,728.25/77,172.45
  6. Step 6: Final answer
    x = 108,582.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.