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Finding the Fourth Proportional to 66,307.82, 91,586.99 and 48,129.51

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Solution

The fourth proportional to 66,307.82, 91,586.99 and 48,129.51 is: 66,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,307.82 : 91,586.99 = 48,129.51 : x
  2. Step 2: Convert to fraction form
    66,307.82/91,586.99 = 48,129.51/x
  3. Step 3: Cross multiply
    66,307.82x = 91,586.99 × 48,129.51
  4. Step 4: Simplify right side
    66,307.82x = 4,408,036,710.43
  5. Step 5: Solve for x
    x = 4,408,036,710.43/66,307.82
  6. Step 6: Final answer
    x = 66,478.39

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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.