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Finding the Fourth Proportional to 76,600.98, 105,701.76 and 47,915.10

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Solution

The fourth proportional to 76,600.98, 105,701.76 and 47,915.10 is: 66,118.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,600.98 : 105,701.76 = 47,915.10 : x
  2. Step 2: Convert to fraction form
    76,600.98/105,701.76 = 47,915.10/x
  3. Step 3: Cross multiply
    76,600.98x = 105,701.76 × 47,915.10
  4. Step 4: Simplify right side
    76,600.98x = 5,064,710,400.58
  5. Step 5: Solve for x
    x = 5,064,710,400.58/76,600.98
  6. Step 6: Final answer
    x = 66,118.09

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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.