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Finding the Fourth Proportional to 71,630.40, 107,445.60 and 65,506.80

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Solution

The fourth proportional to 71,630.40, 107,445.60 and 65,506.80 is: 98,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,630.40 : 107,445.60 = 65,506.80 : x
  2. Step 2: Convert to fraction form
    71,630.40/107,445.60 = 65,506.80/x
  3. Step 3: Cross multiply
    71,630.40x = 107,445.60 × 65,506.80
  4. Step 4: Simplify right side
    71,630.40x = 7,038,417,430.08
  5. Step 5: Solve for x
    x = 7,038,417,430.08/71,630.40
  6. Step 6: Final answer
    x = 98,260.20

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1.5x scale

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.