Home / 74,071.48-102,218.20-42,239.68

Finding the Fourth Proportional to 74,071.48, 102,218.20 and 42,239.68

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Solution

The fourth proportional to 74,071.48, 102,218.20 and 42,239.68 is: 58,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,071.48 : 102,218.20 = 42,239.68 : x
  2. Step 2: Convert to fraction form
    74,071.48/102,218.20 = 42,239.68/x
  3. Step 3: Cross multiply
    74,071.48x = 102,218.20 × 42,239.68
  4. Step 4: Simplify right side
    74,071.48x = 4,317,664,058.18
  5. Step 5: Solve for x
    x = 4,317,664,058.18/74,071.48
  6. Step 6: Final answer
    x = 58,290.51

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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.