Home / 78,574.08-108,432.21-42,764.34

Finding the Fourth Proportional to 78,574.08, 108,432.21 and 42,764.34

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Solution

The fourth proportional to 78,574.08, 108,432.21 and 42,764.34 is: 59,014.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,574.08 : 108,432.21 = 42,764.34 : x
  2. Step 2: Convert to fraction form
    78,574.08/108,432.21 = 42,764.34/x
  3. Step 3: Cross multiply
    78,574.08x = 108,432.21 × 42,764.34
  4. Step 4: Simplify right side
    78,574.08x = 4,637,031,895.39
  5. Step 5: Solve for x
    x = 4,637,031,895.39/78,574.08
  6. Step 6: Final answer
    x = 59,014.78

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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.