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Finding the Fourth Proportional to 77,066.40, 115,599.60 and 73,437.60

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Solution

The fourth proportional to 77,066.40, 115,599.60 and 73,437.60 is: 110,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,066.40 : 115,599.60 = 73,437.60 : x
  2. Step 2: Convert to fraction form
    77,066.40/115,599.60 = 73,437.60/x
  3. Step 3: Cross multiply
    77,066.40x = 115,599.60 × 73,437.60
  4. Step 4: Simplify right side
    77,066.40x = 8,489,357,184.96
  5. Step 5: Solve for x
    x = 8,489,357,184.96/77,066.40
  6. Step 6: Final answer
    x = 110,156.40

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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.