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Finding the Fourth Proportional to 48,647.60, 67,129.92 and 28,501.76

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Solution

The fourth proportional to 48,647.60, 67,129.92 and 28,501.76 is: 39,330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,647.60 : 67,129.92 = 28,501.76 : x
  2. Step 2: Convert to fraction form
    48,647.60/67,129.92 = 28,501.76/x
  3. Step 3: Cross multiply
    48,647.60x = 67,129.92 × 28,501.76
  4. Step 4: Simplify right side
    48,647.60x = 1,913,320,868.66
  5. Step 5: Solve for x
    x = 1,913,320,868.66/48,647.60
  6. Step 6: Final answer
    x = 39,330.22

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1.5x scale

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.