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Finding the Fourth Proportional to 70,104,356.88, 105,159,782.88 and 21,584,384.16

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Solution

The fourth proportional to 70,104,356.88, 105,159,782.88 and 21,584,384.16 is: 32,377,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,104,356.88 : 105,159,782.88 = 21,584,384.16 : x
  2. Step 2: Convert to fraction form
    70,104,356.88/105,159,782.88 = 21,584,384.16/x
  3. Step 3: Cross multiply
    70,104,356.88x = 105,159,782.88 × 21,584,384.16
  4. Step 4: Simplify right side
    70,104,356.88x = 2,269,809,151,864,111
  5. Step 5: Solve for x
    x = 2,269,809,151,864,111/70,104,356.88
  6. Step 6: Final answer
    x = 32,377,576.13

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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.