Home / 76,881.47-106,101.14-42,890.02

Finding the Fourth Proportional to 76,881.47, 106,101.14 and 42,890.02

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Solution

The fourth proportional to 76,881.47, 106,101.14 and 42,890.02 is: 59,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,881.47 : 106,101.14 = 42,890.02 : x
  2. Step 2: Convert to fraction form
    76,881.47/106,101.14 = 42,890.02/x
  3. Step 3: Cross multiply
    76,881.47x = 106,101.14 × 42,890.02
  4. Step 4: Simplify right side
    76,881.47x = 4,550,679,536.92
  5. Step 5: Solve for x
    x = 4,550,679,536.92/76,881.47
  6. Step 6: Final answer
    x = 59,190.85

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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.