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Finding the Fourth Proportional to 79,125.40, 109,244.01 and 70,612.93

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Solution

The fourth proportional to 79,125.40, 109,244.01 and 70,612.93 is: 97,491.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,125.40 : 109,244.01 = 70,612.93 : x
  2. Step 2: Convert to fraction form
    79,125.40/109,244.01 = 70,612.93/x
  3. Step 3: Cross multiply
    79,125.40x = 109,244.01 × 70,612.93
  4. Step 4: Simplify right side
    79,125.40x = 7,714,039,631.05
  5. Step 5: Solve for x
    x = 7,714,039,631.05/79,125.40
  6. Step 6: Final answer
    x = 97,491.32

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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.