Home / 47,785.35-71,686.65-19,690.05

Finding the Fourth Proportional to 47,785.35, 71,686.65 and 19,690.05

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Solution

The fourth proportional to 47,785.35, 71,686.65 and 19,690.05 is: 29,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,785.35 : 71,686.65 = 19,690.05 : x
  2. Step 2: Convert to fraction form
    47,785.35/71,686.65 = 19,690.05/x
  3. Step 3: Cross multiply
    47,785.35x = 71,686.65 × 19,690.05
  4. Step 4: Simplify right side
    47,785.35x = 1,411,513,722.83
  5. Step 5: Solve for x
    x = 1,411,513,722.83/47,785.35
  6. Step 6: Final answer
    x = 29,538.63

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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.