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Finding the Fourth Proportional to 72,798.46, 100,461.55 and 40,967.89

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Solution

The fourth proportional to 72,798.46, 100,461.55 and 40,967.89 is: 56,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,798.46 : 100,461.55 = 40,967.89 : x
  2. Step 2: Convert to fraction form
    72,798.46/100,461.55 = 40,967.89/x
  3. Step 3: Cross multiply
    72,798.46x = 100,461.55 × 40,967.89
  4. Step 4: Simplify right side
    72,798.46x = 4,115,697,729.63
  5. Step 5: Solve for x
    x = 4,115,697,729.63/72,798.46
  6. Step 6: Final answer
    x = 56,535.51

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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.