Home / 78,577.11-108,436.08-42,767.16

Finding the Fourth Proportional to 78,577.11, 108,436.08 and 42,767.16

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Solution

The fourth proportional to 78,577.11, 108,436.08 and 42,767.16 is: 59,018.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,577.11 : 108,436.08 = 42,767.16 : x
  2. Step 2: Convert to fraction form
    78,577.11/108,436.08 = 42,767.16/x
  3. Step 3: Cross multiply
    78,577.11x = 108,436.08 × 42,767.16
  4. Step 4: Simplify right side
    78,577.11x = 4,637,503,183.13
  5. Step 5: Solve for x
    x = 4,637,503,183.13/78,577.11
  6. Step 6: Final answer
    x = 59,018.50

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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.