Home / 28,348,478.18-42,528,918.82-9,181,172.78

Finding the Fourth Proportional to 28,348,478.18, 42,528,918.82 and 9,181,172.78

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Solution

The fourth proportional to 28,348,478.18, 42,528,918.82 and 9,181,172.78 is: 13,773,767.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348,478.18 : 42,528,918.82 = 9,181,172.78 : x
  2. Step 2: Convert to fraction form
    28,348,478.18/42,528,918.82 = 9,181,172.78/x
  3. Step 3: Cross multiply
    28,348,478.18x = 42,528,918.82 × 9,181,172.78
  4. Step 4: Simplify right side
    28,348,478.18x = 390,465,351,833,013.69
  5. Step 5: Solve for x
    x = 390,465,351,833,013.69/28,348,478.18
  6. Step 6: Final answer
    x = 13,773,767.66

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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.