Home / 76,970.60-106,292.79-72,777.26

Finding the Fourth Proportional to 76,970.60, 106,292.79 and 72,777.26

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Solution

The fourth proportional to 76,970.60, 106,292.79 and 72,777.26 is: 100,501.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,970.60 : 106,292.79 = 72,777.26 : x
  2. Step 2: Convert to fraction form
    76,970.60/106,292.79 = 72,777.26/x
  3. Step 3: Cross multiply
    76,970.60x = 106,292.79 × 72,777.26
  4. Step 4: Simplify right side
    76,970.60x = 7,735,697,209.58
  5. Step 5: Solve for x
    x = 7,735,697,209.58/76,970.60
  6. Step 6: Final answer
    x = 100,501.98

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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.