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Finding the Fourth Proportional to 79,307.84, 118,946.56 and 39,854.40

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Solution

The fourth proportional to 79,307.84, 118,946.56 and 39,854.40 is: 59,773.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,307.84 : 118,946.56 = 39,854.40 : x
  2. Step 2: Convert to fraction form
    79,307.84/118,946.56 = 39,854.40/x
  3. Step 3: Cross multiply
    79,307.84x = 118,946.56 × 39,854.40
  4. Step 4: Simplify right side
    79,307.84x = 4,740,543,780.86
  5. Step 5: Solve for x
    x = 4,740,543,780.86/79,307.84
  6. Step 6: Final answer
    x = 59,773.96

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1.5x scale

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.