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Finding the Fourth Proportional to 79,068.42, 109,180.90 and 56,476.71

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Solution

The fourth proportional to 79,068.42, 109,180.90 and 56,476.71 is: 77,985.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,068.42 : 109,180.90 = 56,476.71 : x
  2. Step 2: Convert to fraction form
    79,068.42/109,180.90 = 56,476.71/x
  3. Step 3: Cross multiply
    79,068.42x = 109,180.90 × 56,476.71
  4. Step 4: Simplify right side
    79,068.42x = 6,166,178,026.84
  5. Step 5: Solve for x
    x = 6,166,178,026.84/79,068.42
  6. Step 6: Final answer
    x = 77,985.35

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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.