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Finding the Fourth Proportional to 103,762.80, 155,619.63 and 47,567.88

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Solution

The fourth proportional to 103,762.80, 155,619.63 and 47,567.88 is: 71,340.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,762.80 : 155,619.63 = 47,567.88 : x
  2. Step 2: Convert to fraction form
    103,762.80/155,619.63 = 47,567.88/x
  3. Step 3: Cross multiply
    103,762.80x = 155,619.63 × 47,567.88
  4. Step 4: Simplify right side
    103,762.80x = 7,402,495,885.48
  5. Step 5: Solve for x
    x = 7,402,495,885.48/103,762.80
  6. Step 6: Final answer
    x = 71,340.56

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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.