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Finding the Fourth Proportional to 40,639.68, 60,959.52 and 12,937.68

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Solution

The fourth proportional to 40,639.68, 60,959.52 and 12,937.68 is: 19,406.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,639.68 : 60,959.52 = 12,937.68 : x
  2. Step 2: Convert to fraction form
    40,639.68/60,959.52 = 12,937.68/x
  3. Step 3: Cross multiply
    40,639.68x = 60,959.52 × 12,937.68
  4. Step 4: Simplify right side
    40,639.68x = 788,674,762.71
  5. Step 5: Solve for x
    x = 788,674,762.71/40,639.68
  6. Step 6: Final answer
    x = 19,406.52

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