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Finding the Fourth Proportional to 71,358.60, 98,459.70 and 43,063.80

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Solution

The fourth proportional to 71,358.60, 98,459.70 and 43,063.80 is: 59,418.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,358.60 : 98,459.70 = 43,063.80 : x
  2. Step 2: Convert to fraction form
    71,358.60/98,459.70 = 43,063.80/x
  3. Step 3: Cross multiply
    71,358.60x = 98,459.70 × 43,063.80
  4. Step 4: Simplify right side
    71,358.60x = 4,240,048,828.86
  5. Step 5: Solve for x
    x = 4,240,048,828.86/71,358.60
  6. Step 6: Final answer
    x = 59,418.89

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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.