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Finding the Fourth Proportional to 66,153.40, 91,291.80 and 35,938.84

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Solution

The fourth proportional to 66,153.40, 91,291.80 and 35,938.84 is: 49,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,153.40 : 91,291.80 = 35,938.84 : x
  2. Step 2: Convert to fraction form
    66,153.40/91,291.80 = 35,938.84/x
  3. Step 3: Cross multiply
    66,153.40x = 91,291.80 × 35,938.84
  4. Step 4: Simplify right side
    66,153.40x = 3,280,921,393.51
  5. Step 5: Solve for x
    x = 3,280,921,393.51/66,153.40
  6. Step 6: Final answer
    x = 49,595.66

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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.