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Finding the Fourth Proportional to 47,701.80, 65,860.56 and 42,649.92

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Solution

The fourth proportional to 47,701.80, 65,860.56 and 42,649.92 is: 58,885.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,701.80 : 65,860.56 = 42,649.92 : x
  2. Step 2: Convert to fraction form
    47,701.80/65,860.56 = 42,649.92/x
  3. Step 3: Cross multiply
    47,701.80x = 65,860.56 × 42,649.92
  4. Step 4: Simplify right side
    47,701.80x = 2,808,947,615.16
  5. Step 5: Solve for x
    x = 2,808,947,615.16/47,701.80
  6. Step 6: Final answer
    x = 58,885.57

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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.