Home / 42,755.29-64,146.77-20,565.77

Finding the Fourth Proportional to 42,755.29, 64,146.77 and 20,565.77

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Solution

The fourth proportional to 42,755.29, 64,146.77 and 20,565.77 is: 30,855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,755.29 : 64,146.77 = 20,565.77 : x
  2. Step 2: Convert to fraction form
    42,755.29/64,146.77 = 20,565.77/x
  3. Step 3: Cross multiply
    42,755.29x = 64,146.77 × 20,565.77
  4. Step 4: Simplify right side
    42,755.29x = 1,319,227,718.06
  5. Step 5: Solve for x
    x = 1,319,227,718.06/42,755.29
  6. Step 6: Final answer
    x = 30,855.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.