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Finding the Fourth Proportional to 55,495,319.20, 83,242,978.80 and 53,227,837.60

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Solution

The fourth proportional to 55,495,319.20, 83,242,978.80 and 53,227,837.60 is: 79,841,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,495,319.20 : 83,242,978.80 = 53,227,837.60 : x
  2. Step 2: Convert to fraction form
    55,495,319.20/83,242,978.80 = 53,227,837.60/x
  3. Step 3: Cross multiply
    55,495,319.20x = 83,242,978.80 × 53,227,837.60
  4. Step 4: Simplify right side
    55,495,319.20x = 4,430,843,756,906,643
  5. Step 5: Solve for x
    x = 4,430,843,756,906,643/55,495,319.20
  6. Step 6: Final answer
    x = 79,841,756.40

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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.