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Finding the Fourth Proportional to 64,989.76, 89,686.14 and 35,181.76

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Solution

The fourth proportional to 64,989.76, 89,686.14 and 35,181.76 is: 48,550.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989.76 : 89,686.14 = 35,181.76 : x
  2. Step 2: Convert to fraction form
    64,989.76/89,686.14 = 35,181.76/x
  3. Step 3: Cross multiply
    64,989.76x = 89,686.14 × 35,181.76
  4. Step 4: Simplify right side
    64,989.76x = 3,155,316,252.81
  5. Step 5: Solve for x
    x = 3,155,316,252.81/64,989.76
  6. Step 6: Final answer
    x = 48,550.98

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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.