Home / 42,889.89-64,263.70-30,347.75

Finding the Fourth Proportional to 42,889.89, 64,263.70 and 30,347.75

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Solution

The fourth proportional to 42,889.89, 64,263.70 and 30,347.75 is: 45,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,889.89 : 64,263.70 = 30,347.75 : x
  2. Step 2: Convert to fraction form
    42,889.89/64,263.70 = 30,347.75/x
  3. Step 3: Cross multiply
    42,889.89x = 64,263.70 × 30,347.75
  4. Step 4: Simplify right side
    42,889.89x = 1,950,258,304.49
  5. Step 5: Solve for x
    x = 1,950,258,304.49/42,889.89
  6. Step 6: Final answer
    x = 45,471.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.