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Finding the Fourth Proportional to 71,777.13, 99,051.46 and 39,946.03

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Solution

The fourth proportional to 71,777.13, 99,051.46 and 39,946.03 is: 55,124.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,777.13 : 99,051.46 = 39,946.03 : x
  2. Step 2: Convert to fraction form
    71,777.13/99,051.46 = 39,946.03/x
  3. Step 3: Cross multiply
    71,777.13x = 99,051.46 × 39,946.03
  4. Step 4: Simplify right side
    71,777.13x = 3,956,712,543.28
  5. Step 5: Solve for x
    x = 3,956,712,543.28/71,777.13
  6. Step 6: Final answer
    x = 55,124.98

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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.