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Finding the Fourth Proportional to 64,728.86, 89,328.02 and 35,655.93

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Solution

The fourth proportional to 64,728.86, 89,328.02 and 35,655.93 is: 49,206.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,728.86 : 89,328.02 = 35,655.93 : x
  2. Step 2: Convert to fraction form
    64,728.86/89,328.02 = 35,655.93/x
  3. Step 3: Cross multiply
    64,728.86x = 89,328.02 × 35,655.93
  4. Step 4: Simplify right side
    64,728.86x = 3,185,073,449.88
  5. Step 5: Solve for x
    x = 3,185,073,449.88/64,728.86
  6. Step 6: Final answer
    x = 49,206.39

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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.