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Finding the Fourth Proportional to 70,254, 105,381.06 and 28,701

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Solution

The fourth proportional to 70,254, 105,381.06 and 28,701 is: 43,051.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,254 : 105,381.06 = 28,701 : x
  2. Step 2: Convert to fraction form
    70,254/105,381.06 = 28,701/x
  3. Step 3: Cross multiply
    70,254x = 105,381.06 × 28,701
  4. Step 4: Simplify right side
    70,254x = 3,024,541,803.06
  5. Step 5: Solve for x
    x = 3,024,541,803.06/70,254
  6. Step 6: Final answer
    x = 43,051.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.