Home / 77,428.87-106,851.35-42,973.22

Finding the Fourth Proportional to 77,428.87, 106,851.35 and 42,973.22

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Solution

The fourth proportional to 77,428.87, 106,851.35 and 42,973.22 is: 59,302.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,428.87 : 106,851.35 = 42,973.22 : x
  2. Step 2: Convert to fraction form
    77,428.87/106,851.35 = 42,973.22/x
  3. Step 3: Cross multiply
    77,428.87x = 106,851.35 × 42,973.22
  4. Step 4: Simplify right side
    77,428.87x = 4,591,746,945.41
  5. Step 5: Solve for x
    x = 4,591,746,945.41/77,428.87
  6. Step 6: Final answer
    x = 59,302.78

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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.