Home / 74,308.19-102,542.05-42,479.13

Finding the Fourth Proportional to 74,308.19, 102,542.05 and 42,479.13

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Solution

The fourth proportional to 74,308.19, 102,542.05 and 42,479.13 is: 58,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,308.19 : 102,542.05 = 42,479.13 : x
  2. Step 2: Convert to fraction form
    74,308.19/102,542.05 = 42,479.13/x
  3. Step 3: Cross multiply
    74,308.19x = 102,542.05 × 42,479.13
  4. Step 4: Simplify right side
    74,308.19x = 4,355,897,510.05
  5. Step 5: Solve for x
    x = 4,355,897,510.05/74,308.19
  6. Step 6: Final answer
    x = 58,619.35

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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.