Home / 65,638,754.12-90,639,581.46-40,901,159.72

Finding the Fourth Proportional to 65,638,754.12, 90,639,581.46 and 40,901,159.72

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Solution

The fourth proportional to 65,638,754.12, 90,639,581.46 and 40,901,159.72 is: 56,479,804.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,638,754.12 : 90,639,581.46 = 40,901,159.72 : x
  2. Step 2: Convert to fraction form
    65,638,754.12/90,639,581.46 = 40,901,159.72/x
  3. Step 3: Cross multiply
    65,638,754.12x = 90,639,581.46 × 40,901,159.72
  4. Step 4: Simplify right side
    65,638,754.12x = 3,707,263,998,249,410.50
  5. Step 5: Solve for x
    x = 3,707,263,998,249,410.50/65,638,754.12
  6. Step 6: Final answer
    x = 56,479,804.47

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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.