Home / 64,705.05-89,341.62-63,671.70

Finding the Fourth Proportional to 64,705.05, 89,341.62 and 63,671.70

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Solution

The fourth proportional to 64,705.05, 89,341.62 and 63,671.70 is: 87,914.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,705.05 : 89,341.62 = 63,671.70 : x
  2. Step 2: Convert to fraction form
    64,705.05/89,341.62 = 63,671.70/x
  3. Step 3: Cross multiply
    64,705.05x = 89,341.62 × 63,671.70
  4. Step 4: Simplify right side
    64,705.05x = 5,688,532,826.15
  5. Step 5: Solve for x
    x = 5,688,532,826.15/64,705.05
  6. Step 6: Final answer
    x = 87,914.82

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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.