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Finding the Fourth Proportional to 69,984,005.60, 104,976,008.40 and 55,371,346.40

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Solution

The fourth proportional to 69,984,005.60, 104,976,008.40 and 55,371,346.40 is: 83,057,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,984,005.60 : 104,976,008.40 = 55,371,346.40 : x
  2. Step 2: Convert to fraction form
    69,984,005.60/104,976,008.40 = 55,371,346.40/x
  3. Step 3: Cross multiply
    69,984,005.60x = 104,976,008.40 × 55,371,346.40
  4. Step 4: Simplify right side
    69,984,005.60x = 5,812,662,924,805,710
  5. Step 5: Solve for x
    x = 5,812,662,924,805,710/69,984,005.60
  6. Step 6: Final answer
    x = 83,057,019.60

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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.