Home / 76,637.28-105,755.64-42,647.76

Finding the Fourth Proportional to 76,637.28, 105,755.64 and 42,647.76

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Solution

The fourth proportional to 76,637.28, 105,755.64 and 42,647.76 is: 58,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,637.28 : 105,755.64 = 42,647.76 : x
  2. Step 2: Convert to fraction form
    76,637.28/105,755.64 = 42,647.76/x
  3. Step 3: Cross multiply
    76,637.28x = 105,755.64 × 42,647.76
  4. Step 4: Simplify right side
    76,637.28x = 4,510,241,153.37
  5. Step 5: Solve for x
    x = 4,510,241,153.37/76,637.28
  6. Step 6: Final answer
    x = 58,851.79

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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.