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Finding the Fourth Proportional to 53,898,978.30, 80,851,966.65 and 28,389,810.30

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Solution

The fourth proportional to 53,898,978.30, 80,851,966.65 and 28,389,810.30 is: 42,586,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,898,978.30 : 80,851,966.65 = 28,389,810.30 : x
  2. Step 2: Convert to fraction form
    53,898,978.30/80,851,966.65 = 28,389,810.30/x
  3. Step 3: Cross multiply
    53,898,978.30x = 80,851,966.65 × 28,389,810.30
  4. Step 4: Simplify right side
    53,898,978.30x = 2,295,371,995,575,426.50
  5. Step 5: Solve for x
    x = 2,295,371,995,575,426.50/53,898,978.30
  6. Step 6: Final answer
    x = 42,586,558.56

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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.