Home / 76,990.32-106,239.60-45,153.36

Finding the Fourth Proportional to 76,990.32, 106,239.60 and 45,153.36

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Solution

The fourth proportional to 76,990.32, 106,239.60 and 45,153.36 is: 62,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,990.32 : 106,239.60 = 45,153.36 : x
  2. Step 2: Convert to fraction form
    76,990.32/106,239.60 = 45,153.36/x
  3. Step 3: Cross multiply
    76,990.32x = 106,239.60 × 45,153.36
  4. Step 4: Simplify right side
    76,990.32x = 4,797,074,905.06
  5. Step 5: Solve for x
    x = 4,797,074,905.06/76,990.32
  6. Step 6: Final answer
    x = 62,307.51

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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.