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Finding the Fourth Proportional to 60,775.68, 91,129.50 and 21,317.34

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Solution

The fourth proportional to 60,775.68, 91,129.50 and 21,317.34 is: 31,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,775.68 : 91,129.50 = 21,317.34 : x
  2. Step 2: Convert to fraction form
    60,775.68/91,129.50 = 21,317.34/x
  3. Step 3: Cross multiply
    60,775.68x = 91,129.50 × 21,317.34
  4. Step 4: Simplify right side
    60,775.68x = 1,942,638,535.53
  5. Step 5: Solve for x
    x = 1,942,638,535.53/60,775.68
  6. Step 6: Final answer
    x = 31,964.08

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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.