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Finding the Fourth Proportional to 21,830,458.60, 30,607,431.80 and 21,830,458.60

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Solution

The fourth proportional to 21,830,458.60, 30,607,431.80 and 21,830,458.60 is: 30,607,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830,458.60 : 30,607,431.80 = 21,830,458.60 : x
  2. Step 2: Convert to fraction form
    21,830,458.60/30,607,431.80 = 21,830,458.60/x
  3. Step 3: Cross multiply
    21,830,458.60x = 30,607,431.80 × 21,830,458.60
  4. Step 4: Simplify right side
    21,830,458.60x = 668,174,272,762,223.50
  5. Step 5: Solve for x
    x = 668,174,272,762,223.50/21,830,458.60
  6. Step 6: Final answer
    x = 30,607,431.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.