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Finding the Fourth Proportional to 77,478.48, 106,911.48 and 43,482.36

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Solution

The fourth proportional to 77,478.48, 106,911.48 and 43,482.36 is: 60,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,478.48 : 106,911.48 = 43,482.36 : x
  2. Step 2: Convert to fraction form
    77,478.48/106,911.48 = 43,482.36/x
  3. Step 3: Cross multiply
    77,478.48x = 106,911.48 × 43,482.36
  4. Step 4: Simplify right side
    77,478.48x = 4,648,763,461.49
  5. Step 5: Solve for x
    x = 4,648,763,461.49/77,478.48
  6. Step 6: Final answer
    x = 60,000.71

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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.