Home / 79,376.08-109,538.85-45,385.21

Finding the Fourth Proportional to 79,376.08, 109,538.85 and 45,385.21

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Solution

The fourth proportional to 79,376.08, 109,538.85 and 45,385.21 is: 62,631.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,376.08 : 109,538.85 = 45,385.21 : x
  2. Step 2: Convert to fraction form
    79,376.08/109,538.85 = 45,385.21/x
  3. Step 3: Cross multiply
    79,376.08x = 109,538.85 × 45,385.21
  4. Step 4: Simplify right side
    79,376.08x = 4,971,442,935.79
  5. Step 5: Solve for x
    x = 4,971,442,935.79/79,376.08
  6. Step 6: Final answer
    x = 62,631.50

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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.