Home / 74,609.12-102,962.25-42,345.87

Finding the Fourth Proportional to 74,609.12, 102,962.25 and 42,345.87

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Solution

The fourth proportional to 74,609.12, 102,962.25 and 42,345.87 is: 58,438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,609.12 : 102,962.25 = 42,345.87 : x
  2. Step 2: Convert to fraction form
    74,609.12/102,962.25 = 42,345.87/x
  3. Step 3: Cross multiply
    74,609.12x = 102,962.25 × 42,345.87
  4. Step 4: Simplify right side
    74,609.12x = 4,360,026,053.41
  5. Step 5: Solve for x
    x = 4,360,026,053.41/74,609.12
  6. Step 6: Final answer
    x = 58,438.25

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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.