Home / 65,707,957.96-90,689,112.47-42,215,861.68

Finding the Fourth Proportional to 65,707,957.96, 90,689,112.47 and 42,215,861.68

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Solution

The fourth proportional to 65,707,957.96, 90,689,112.47 and 42,215,861.68 is: 58,265,682.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,707,957.96 : 90,689,112.47 = 42,215,861.68 : x
  2. Step 2: Convert to fraction form
    65,707,957.96/90,689,112.47 = 42,215,861.68/x
  3. Step 3: Cross multiply
    65,707,957.96x = 90,689,112.47 × 42,215,861.68
  4. Step 4: Simplify right side
    65,707,957.96x = 3,828,519,027,915,483
  5. Step 5: Solve for x
    x = 3,828,519,027,915,483/65,707,957.96
  6. Step 6: Final answer
    x = 58,265,682.68

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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.