Home / 74,569.77-102,910.71-42,740.72

Finding the Fourth Proportional to 74,569.77, 102,910.71 and 42,740.72

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Solution

The fourth proportional to 74,569.77, 102,910.71 and 42,740.72 is: 58,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,569.77 : 102,910.71 = 42,740.72 : x
  2. Step 2: Convert to fraction form
    74,569.77/102,910.71 = 42,740.72/x
  3. Step 3: Cross multiply
    74,569.77x = 102,910.71 × 42,740.72
  4. Step 4: Simplify right side
    74,569.77x = 4,398,477,841.11
  5. Step 5: Solve for x
    x = 4,398,477,841.11/74,569.77
  6. Step 6: Final answer
    x = 58,984.73

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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.