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Finding the Fourth Proportional to 60,665.80, 83,998.74 and 56,000.20

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Solution

The fourth proportional to 60,665.80, 83,998.74 and 56,000.20 is: 77,538.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,665.80 : 83,998.74 = 56,000.20 : x
  2. Step 2: Convert to fraction form
    60,665.80/83,998.74 = 56,000.20/x
  3. Step 3: Cross multiply
    60,665.80x = 83,998.74 × 56,000.20
  4. Step 4: Simplify right side
    60,665.80x = 4,703,946,239.75
  5. Step 5: Solve for x
    x = 4,703,946,239.75/60,665.80
  6. Step 6: Final answer
    x = 77,538.68

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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.