Home / 42,894.90-64,271.20-30,352.74

Finding the Fourth Proportional to 42,894.90, 64,271.20 and 30,352.74

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Solution

The fourth proportional to 42,894.90, 64,271.20 and 30,352.74 is: 45,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,894.90 : 64,271.20 = 30,352.74 : x
  2. Step 2: Convert to fraction form
    42,894.90/64,271.20 = 30,352.74/x
  3. Step 3: Cross multiply
    42,894.90x = 64,271.20 × 30,352.74
  4. Step 4: Simplify right side
    42,894.90x = 1,950,807,023.09
  5. Step 5: Solve for x
    x = 1,950,807,023.09/42,894.90
  6. Step 6: Final answer
    x = 45,478.76

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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.