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Finding the Fourth Proportional to 64,485.20, 96,727.80 and 57,924.20

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Solution

The fourth proportional to 64,485.20, 96,727.80 and 57,924.20 is: 86,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,485.20 : 96,727.80 = 57,924.20 : x
  2. Step 2: Convert to fraction form
    64,485.20/96,727.80 = 57,924.20/x
  3. Step 3: Cross multiply
    64,485.20x = 96,727.80 × 57,924.20
  4. Step 4: Simplify right side
    64,485.20x = 5,602,880,432.76
  5. Step 5: Solve for x
    x = 5,602,880,432.76/64,485.20
  6. Step 6: Final answer
    x = 86,886.30

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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.