Home / 62,979.05-86,872.95-40,310.07

Finding the Fourth Proportional to 62,979.05, 86,872.95 and 40,310.07

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Solution

The fourth proportional to 62,979.05, 86,872.95 and 40,310.07 is: 55,603.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,979.05 : 86,872.95 = 40,310.07 : x
  2. Step 2: Convert to fraction form
    62,979.05/86,872.95 = 40,310.07/x
  3. Step 3: Cross multiply
    62,979.05x = 86,872.95 × 40,310.07
  4. Step 4: Simplify right side
    62,979.05x = 3,501,854,695.61
  5. Step 5: Solve for x
    x = 3,501,854,695.61/62,979.05
  6. Step 6: Final answer
    x = 55,603.49

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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.