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Finding the Fourth Proportional to 64,010.80, 95,821.80 and 57,012.40

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Solution

The fourth proportional to 64,010.80, 95,821.80 and 57,012.40 is: 85,345.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,010.80 : 95,821.80 = 57,012.40 : x
  2. Step 2: Convert to fraction form
    64,010.80/95,821.80 = 57,012.40/x
  3. Step 3: Cross multiply
    64,010.80x = 95,821.80 × 57,012.40
  4. Step 4: Simplify right side
    64,010.80x = 5,463,030,790.32
  5. Step 5: Solve for x
    x = 5,463,030,790.32/64,010.80
  6. Step 6: Final answer
    x = 85,345.45

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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.