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Finding the Fourth Proportional to 86,008.60, 118,697.70 and 64,754.20

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Solution

The fourth proportional to 86,008.60, 118,697.70 and 64,754.20 is: 89,365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,008.60 : 118,697.70 = 64,754.20 : x
  2. Step 2: Convert to fraction form
    86,008.60/118,697.70 = 64,754.20/x
  3. Step 3: Cross multiply
    86,008.60x = 118,697.70 × 64,754.20
  4. Step 4: Simplify right side
    86,008.60x = 7,686,174,605.34
  5. Step 5: Solve for x
    x = 7,686,174,605.34/86,008.60
  6. Step 6: Final answer
    x = 89,365.19

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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.