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Finding the Fourth Proportional to 85,332.58, 128,089.05 and 47,924.62

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Solution

The fourth proportional to 85,332.58, 128,089.05 and 47,924.62 is: 71,937.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,332.58 : 128,089.05 = 47,924.62 : x
  2. Step 2: Convert to fraction form
    85,332.58/128,089.05 = 47,924.62/x
  3. Step 3: Cross multiply
    85,332.58x = 128,089.05 × 47,924.62
  4. Step 4: Simplify right side
    85,332.58x = 6,138,619,047.41
  5. Step 5: Solve for x
    x = 6,138,619,047.41/85,332.58
  6. Step 6: Final answer
    x = 71,937.58

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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.