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Finding the Fourth Proportional to 72,386.46, 107,937.90 and 67,560.48

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Solution

The fourth proportional to 72,386.46, 107,937.90 and 67,560.48 is: 100,741.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,386.46 : 107,937.90 = 67,560.48 : x
  2. Step 2: Convert to fraction form
    72,386.46/107,937.90 = 67,560.48/x
  3. Step 3: Cross multiply
    72,386.46x = 107,937.90 × 67,560.48
  4. Step 4: Simplify right side
    72,386.46x = 7,292,336,334.19
  5. Step 5: Solve for x
    x = 7,292,336,334.19/72,386.46
  6. Step 6: Final answer
    x = 100,741.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.