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Finding the Fourth Proportional to 64,230.30, 96,345.45 and 45,531.45

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Solution

The fourth proportional to 64,230.30, 96,345.45 and 45,531.45 is: 68,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,230.30 : 96,345.45 = 45,531.45 : x
  2. Step 2: Convert to fraction form
    64,230.30/96,345.45 = 45,531.45/x
  3. Step 3: Cross multiply
    64,230.30x = 96,345.45 × 45,531.45
  4. Step 4: Simplify right side
    64,230.30x = 4,386,748,039.40
  5. Step 5: Solve for x
    x = 4,386,748,039.40/64,230.30
  6. Step 6: Final answer
    x = 68,297.18

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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.