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Finding the Fourth Proportional to 56,261.79, 83,915.80 and 47,435.42

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Solution

The fourth proportional to 56,261.79, 83,915.80 and 47,435.42 is: 70,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,261.79 : 83,915.80 = 47,435.42 : x
  2. Step 2: Convert to fraction form
    56,261.79/83,915.80 = 47,435.42/x
  3. Step 3: Cross multiply
    56,261.79x = 83,915.80 × 47,435.42
  4. Step 4: Simplify right side
    56,261.79x = 3,980,581,308.84
  5. Step 5: Solve for x
    x = 3,980,581,308.84/56,261.79
  6. Step 6: Final answer
    x = 70,751.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.