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Finding the Fourth Proportional to 66,407.54, 99,642.38 and 33,130.17

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Solution

The fourth proportional to 66,407.54, 99,642.38 and 33,130.17 is: 49,710.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407.54 : 99,642.38 = 33,130.17 : x
  2. Step 2: Convert to fraction form
    66,407.54/99,642.38 = 33,130.17/x
  3. Step 3: Cross multiply
    66,407.54x = 99,642.38 × 33,130.17
  4. Step 4: Simplify right side
    66,407.54x = 3,301,168,822.95
  5. Step 5: Solve for x
    x = 3,301,168,822.95/66,407.54
  6. Step 6: Final answer
    x = 49,710.76

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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.