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Finding the Fourth Proportional to 64,878.90, 89,533.53 and 38,037.30

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Solution

The fourth proportional to 64,878.90, 89,533.53 and 38,037.30 is: 52,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878.90 : 89,533.53 = 38,037.30 : x
  2. Step 2: Convert to fraction form
    64,878.90/89,533.53 = 38,037.30/x
  3. Step 3: Cross multiply
    64,878.90x = 89,533.53 × 38,037.30
  4. Step 4: Simplify right side
    64,878.90x = 3,405,613,740.67
  5. Step 5: Solve for x
    x = 3,405,613,740.67/64,878.90
  6. Step 6: Final answer
    x = 52,491.85

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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.