Home / 39,979.79-59,876.40-31,603.58

Finding the Fourth Proportional to 39,979.79, 59,876.40 and 31,603.58

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Solution

The fourth proportional to 39,979.79, 59,876.40 and 31,603.58 is: 47,331.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.79 : 59,876.40 = 31,603.58 : x
  2. Step 2: Convert to fraction form
    39,979.79/59,876.40 = 31,603.58/x
  3. Step 3: Cross multiply
    39,979.79x = 59,876.40 × 31,603.58
  4. Step 4: Simplify right side
    39,979.79x = 1,892,308,597.51
  5. Step 5: Solve for x
    x = 1,892,308,597.51/39,979.79
  6. Step 6: Final answer
    x = 47,331.63

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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.