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Finding the Fourth Proportional to 77,304.96, 115,810.56 and 69,068.16

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Solution

The fourth proportional to 77,304.96, 115,810.56 and 69,068.16 is: 103,471.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,304.96 : 115,810.56 = 69,068.16 : x
  2. Step 2: Convert to fraction form
    77,304.96/115,810.56 = 69,068.16/x
  3. Step 3: Cross multiply
    77,304.96x = 115,810.56 × 69,068.16
  4. Step 4: Simplify right side
    77,304.96x = 7,998,822,287.77
  5. Step 5: Solve for x
    x = 7,998,822,287.77/77,304.96
  6. Step 6: Final answer
    x = 103,471.01

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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.