Home / 65,638,753.12-90,639,580.08-40,901,158.72

Finding the Fourth Proportional to 65,638,753.12, 90,639,580.08 and 40,901,158.72

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Solution

The fourth proportional to 65,638,753.12, 90,639,580.08 and 40,901,158.72 is: 56,479,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,638,753.12 : 90,639,580.08 = 40,901,158.72 : x
  2. Step 2: Convert to fraction form
    65,638,753.12/90,639,580.08 = 40,901,158.72/x
  3. Step 3: Cross multiply
    65,638,753.12x = 90,639,580.08 × 40,901,158.72
  4. Step 4: Simplify right side
    65,638,753.12x = 3,707,263,851,166,230
  5. Step 5: Solve for x
    x = 3,707,263,851,166,230/65,638,753.12
  6. Step 6: Final answer
    x = 56,479,803.09

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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.