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Finding the Fourth Proportional to 48,615.38, 72,920.63 and 19,038.63

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Solution

The fourth proportional to 48,615.38, 72,920.63 and 19,038.63 is: 28,556.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,615.38 : 72,920.63 = 19,038.63 : x
  2. Step 2: Convert to fraction form
    48,615.38/72,920.63 = 19,038.63/x
  3. Step 3: Cross multiply
    48,615.38x = 72,920.63 × 19,038.63
  4. Step 4: Simplify right side
    48,615.38x = 1,388,308,798.74
  5. Step 5: Solve for x
    x = 1,388,308,798.74/48,615.38
  6. Step 6: Final answer
    x = 28,556.99

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1.5x scale

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.