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Finding the Fourth Proportional to 72,618.40, 97,723.80 and 72,618.40

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Solution

The fourth proportional to 72,618.40, 97,723.80 and 72,618.40 is: 97,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,618.40 : 97,723.80 = 72,618.40 : x
  2. Step 2: Convert to fraction form
    72,618.40/97,723.80 = 72,618.40/x
  3. Step 3: Cross multiply
    72,618.40x = 97,723.80 × 72,618.40
  4. Step 4: Simplify right side
    72,618.40x = 7,096,545,997.92
  5. Step 5: Solve for x
    x = 7,096,545,997.92/72,618.40
  6. Step 6: Final answer
    x = 97,723.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.