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Finding the Fourth Proportional to 45,892, 63,353.21 and 30,779.13

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Solution

The fourth proportional to 45,892, 63,353.21 and 30,779.13 is: 42,490.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,892 : 63,353.21 = 30,779.13 : x
  2. Step 2: Convert to fraction form
    45,892/63,353.21 = 30,779.13/x
  3. Step 3: Cross multiply
    45,892x = 63,353.21 × 30,779.13
  4. Step 4: Simplify right side
    45,892x = 1,949,956,686.51
  5. Step 5: Solve for x
    x = 1,949,956,686.51/45,892
  6. Step 6: Final answer
    x = 42,490.12

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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.