Home / 42,762.96-64,133.20-12,770.08

Finding the Fourth Proportional to 42,762.96, 64,133.20 and 12,770.08

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Solution

The fourth proportional to 42,762.96, 64,133.20 and 12,770.08 is: 19,151.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,762.96 : 64,133.20 = 12,770.08 : x
  2. Step 2: Convert to fraction form
    42,762.96/64,133.20 = 12,770.08/x
  3. Step 3: Cross multiply
    42,762.96x = 64,133.20 × 12,770.08
  4. Step 4: Simplify right side
    42,762.96x = 818,986,094.66
  5. Step 5: Solve for x
    x = 818,986,094.66/42,762.96
  6. Step 6: Final answer
    x = 19,151.76

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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.