Home / 78,631.67-108,516.25-59,215.82

Finding the Fourth Proportional to 78,631.67, 108,516.25 and 59,215.82

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Solution

The fourth proportional to 78,631.67, 108,516.25 and 59,215.82 is: 81,721.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,631.67 : 108,516.25 = 59,215.82 : x
  2. Step 2: Convert to fraction form
    78,631.67/108,516.25 = 59,215.82/x
  3. Step 3: Cross multiply
    78,631.67x = 108,516.25 × 59,215.82
  4. Step 4: Simplify right side
    78,631.67x = 6,425,878,184.49
  5. Step 5: Solve for x
    x = 6,425,878,184.49/78,631.67
  6. Step 6: Final answer
    x = 81,721.25

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1.5x scale

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.