Home / 79,209.02-109,307.81-42,909.68

Finding the Fourth Proportional to 79,209.02, 109,307.81 and 42,909.68

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Solution

The fourth proportional to 79,209.02, 109,307.81 and 42,909.68 is: 59,215.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,209.02 : 109,307.81 = 42,909.68 : x
  2. Step 2: Convert to fraction form
    79,209.02/109,307.81 = 42,909.68/x
  3. Step 3: Cross multiply
    79,209.02x = 109,307.81 × 42,909.68
  4. Step 4: Simplify right side
    79,209.02x = 4,690,363,529.14
  5. Step 5: Solve for x
    x = 4,690,363,529.14/79,209.02
  6. Step 6: Final answer
    x = 59,215.02

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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.