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Finding the Fourth Proportional to 85,526.40, 128,095.20 and 43,924.80

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Solution

The fourth proportional to 85,526.40, 128,095.20 and 43,924.80 is: 65,787.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,526.40 : 128,095.20 = 43,924.80 : x
  2. Step 2: Convert to fraction form
    85,526.40/128,095.20 = 43,924.80/x
  3. Step 3: Cross multiply
    85,526.40x = 128,095.20 × 43,924.80
  4. Step 4: Simplify right side
    85,526.40x = 5,626,556,040.96
  5. Step 5: Solve for x
    x = 5,626,556,040.96/85,526.40
  6. Step 6: Final answer
    x = 65,787.36

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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.