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Finding the Fourth Proportional to 71,430.76, 98,467.14 and 47,506.60

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Solution

The fourth proportional to 71,430.76, 98,467.14 and 47,506.60 is: 65,487.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,430.76 : 98,467.14 = 47,506.60 : x
  2. Step 2: Convert to fraction form
    71,430.76/98,467.14 = 47,506.60/x
  3. Step 3: Cross multiply
    71,430.76x = 98,467.14 × 47,506.60
  4. Step 4: Simplify right side
    71,430.76x = 4,677,839,033.12
  5. Step 5: Solve for x
    x = 4,677,839,033.12/71,430.76
  6. Step 6: Final answer
    x = 65,487.74

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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.