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Finding the Fourth Proportional to 76,748.68, 105,920.76 and 44,915.68

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Solution

The fourth proportional to 76,748.68, 105,920.76 and 44,915.68 is: 61,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,748.68 : 105,920.76 = 44,915.68 : x
  2. Step 2: Convert to fraction form
    76,748.68/105,920.76 = 44,915.68/x
  3. Step 3: Cross multiply
    76,748.68x = 105,920.76 × 44,915.68
  4. Step 4: Simplify right side
    76,748.68x = 4,757,502,961.52
  5. Step 5: Solve for x
    x = 4,757,502,961.52/76,748.68
  6. Step 6: Final answer
    x = 61,988.08

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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.